Hello About A Few Months A Ago I Took Mg

hello about a few months a ago I took mg of celexa I am a female 5'2 and 135 pounds plus I smoked some weed to help me relax but I had a severe panick attack like I was going crazy then my head was shaking and I felt a vein in the back of my head throbbing very fast and my fear was I was going to be like this for the rest of my life ...it subsided but I haven't felt right since what to I do