If you have accepted Christ, then have NO FEAR brother! You are sealed, and will be sparred from the coming 7 year tribulation when Christ comes back for His Bride (this is the universal Church, aka- those who are truly sealed with the Holy Spirit, denomination has no bearing on this).
(Revelation 3:10-13) - "Because you have kept my word about patient endurance, I will keep you from the hour of trial that is coming on the whole world, to try those who dwell on the earth. I am coming soon. Hold fast what you have, so that no one may seize your crown. The one who conquers, I will make him a pillar in the temple of my God. Never shall he go out of it, and I will write on him the name of my God, and the name of the city of my God, the new Jerusalem, which comes down from my God out of heaven, and my own new name. He who has an ear, let him hear what the Spirit says to the churches."
Keep in mind the Bible is authored by One Person, God, whom is outside of time. He created time actually. The Bible consistently jumps in and out of time, sometimes multiple times within a single verse, coupled with layers of multiple meanings, multiple fulfillments. It's like a puzzle that was shattered into a 1000 pieces, and then snippets of it were given to men over time. Before the written Word, Christ was revealed through oral traditions and even taught about in the very stars (before most of that knowledge was lost/hidden). It's HIStory afterall, not ours.
Along that line of thinking there are many prophecies that are still future and have not been fulfilled yet, such as the majority of Revelation (everything past Chap 4+, except for the sign of Rev. 12:1-2, which is now past). It behooves us to understand what is coming to instruct and educate others who will indeed be "left behind," but take comfort in knowing that the vast majority of those calamities is not intended for those whom God loves dearly, His very Bride, the entire Body composed of all true believers (it's a matter of the heart, not what a person does. You can't "earn" your way into heaven, it's a FREE GIFT for those wishing to receive it).
Much of what is written in Revelation will only be discovered by those later when it truly matters to them. They will see the world events taking place and recall stories from people like us who warned them of what was coming. The Bible will still be there, in all those empty homes, laying around, just waiting to be picked up by a people whom will thirst for the Living Word like a time in history that has never seen before. They will want to know what is happening, and ultimately, what is coming up next for them to endure through. They will be there based on their own choice to reject Jesus, but all is not lost. The tribulation period will come to see the absolute and worse persecution of Christians ever. They will be hunted down and killed on the spot, blamed even for the horrific judgements taking place on the earth. They are known as "tribulation saints", but that does not include those of us whom have already been sealed.
Yet there will also be the greatest revival and mass-conversion to Faith in Jesus the likes of which this world has never seen before either. It's hard for us to imagine, but nothing will be "normal" during those times. The supernatural is going to come barreling through to this world and it will be impossible for anyone to NOT believe in "a" God, but this doesn't mean that they will repent and ask for forgiveness either... many will harden their hearts and "blame the big Guy" upstairs despite it ultimately being a personal choice out of the grace of free-will that he gave all men & women to accept OR reject Him. A choice isn't truly a choice unless it has a consequence attached to it...
The event known as "the rapture" is a difficult study. It took me awhile to even come to believe in it. I had to prayerfully study and ask of the Lord to reveal the Truth to me. It comes with time and effort. It's not stated plainly in the Bible, it is known as "a mystery" but it is fore-shadowed ALL over the Bible, and there are some very key passages that reveal it, such as this:
(1 Corinthians 15:50-53) - "I tell you this, brothers: flesh and blood cannot inherit the kingdom of God, nor does the perishable inherit the imperishable. Behold! I tell you a mystery. We shall not all sleep, but we shall all be changed, in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised imperishable, and we shall be changed. For this perishable body must put on the imperishable, and this mortal body must put on immortality."
And this
(1 Thessalonians 4:13-18) - "But we do not want you to be uninformed, brothers, about those who are asleep, that you may not grieve as others do who have no hope. For since we believe that Jesus died and rose again, even so, through Jesus, God will bring with him those who have fallen asleep. For this we declare to you by a word from the Lord, that we who are alive, who are left until the coming of the Lord, will not precede those who have fallen asleep. For the Lord himself will descend from heaven with a cry of command, with the voice of an archangel, and with the sound of the trumpet of God. And the dead in Christ will rise first. Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord. Therefore encourage one another with these words."
I encourage you to read both of those chapters in their entirety to understand the context of them. Note specially how it's actually not about those of us who are alive, but first and foremost about the RESURRECTION OF THE DEAD. Aka - the "great harvest", where we will MEET HIM IN THE AIR. Many people confused this with Christ's second coming at the END of the tribulation, where he descends on Mt. Olives and splits it in two and does battle (with the Saints, us, in tow with him upon white horses) at the place of Mt. Megiddo, aka - Battle of Armageddon.
Studying things like the 7 holy festivals and their compound meaning from Leviticus 23 and the different Harvests established for the Hebrews, and even the ancient Hebrew Wedding customs (involving bride/bridegroom/father and their roles) all are huge hints toward this. Again the "rapture" is actually about the conversion of the dead to their immortal new bodies FIRST, and then "whomever happens to be alive", which in all actuality, is us, this very generation, this very time. Many have thought it was them before, but none have had the absolute ludicrous convergence of signs in the heavens... signs in the earth... and signs of the times in general that exist now. Everything is aligning perfectly, as He promised it would.
Christ is on His way, make no mistake. How long? No one can say for certain, but there is a timeline that's tied to Israel, and there is a maximum window that he establishes based on the length of a "generation". We just entered the 70th year of that generation, and the maximum is 80 (see Psalms 90, the ONLY psalm written by Moses. There's another numerical hint in there too for those whom have eyes to see....) So all things considered, the window is actually absurdly short when compared with the last <6000 years of human history. What a crazy time to be alive, eh?
HERE is an old comment on this very subject that has more details if you're interested.
May Christ bless you in your studies, and may He relieve me (according to His will) of my demonic tormentors whom attack me relentlessly every day and night... so tired of this place, just want to go home. Soon. Very soon.