Marijuana induced hell for a week.

Hello, about 3-4 months ago I started vaporizing marijuana and never had a problem. Last Monday on Easter Sunday I vaporized marijuana and after that I haven't been the same. It's been a week of hell filled with anxiety/worry/being scared/ and a overall feeling of disconnection with myself. Been to the ER 3 times and my blood work checked out together with EKG. Went there to check myself due to heart palpatations. It is Wednesday now and I had a pretty good moment of feeling myself again as far as laughing and having a good time with my brother. Yesterday I went to my primary doctor and he prescribed prexeva (SSRI) I believe to get me back then lean myself off of them. Problem is im scared to take them because I've never had any problem and have never had to take any medication. I've always been a happy guy and I just want to return to who I was. Forgot to say they also ran a urine test and marijuana was the only thing they found. Should I continue to ride this out or try the medicine?