Post-traumatic stress disorder (PTSD) is a mental health condition that's triggered by a terrifying event — either experiencing it or witnessing it.
If such a variation in price can have this effect on your health then:
1. You didn't do your homework at investing, you didn't do a "background check" for Bitcoin and possibly you invested too much - more than you afford to lose.
2. You should get out of this market ASAP. Money is not everything and if your health cannot cope with the big price variations Bitcoin market is used with, you better take care of your health by giving up Bitcoin.
Keep in mind that these are ideas. You should do as you think, it's your money.
Also keep in mind that I do believe that Bitcoin price will recover and get to new ATH, but I cannot tell if that will happen in a day or 10 years.