Best advice is not to panic.
Most if not all symptoms will subside.
Rarely people with any covid suffer from neurological damage. That usually only happens with the elderly and people that have immune deficiency disorders or are obese and get a serious case.
So, if you don't fall under any of these categories, you should be fine. Drink lots of fluids and keep comfortable until your symptoms subside. If you feel like you may be having a heart attack, go to the ER even if its to ease your mind.