Last Monday, I Took A Prescribed Liquid Form Of Benadryl

Last Monday, I took a prescribed liquid form of benadryl (like a mouthwash) (Rinse & spit). On Wednesday of last week, it really started to affect me. I felt like someone else was inside me. I just felt weird like I wasn't myself. My stomach felt like it butterflies in it all the time (like I was either nervous or excited all the time) like I am on edge constantly. I finished taking it on Monday, but I still have butterflies (Nervousness/excited), My stomach feels really gassy & sometimes I feel weak & tired all the time. It also like my thoughts aren't my own. PLEASE HELP ME!!!!