I had an EPI injection last Wed ( 19th). They used IV Fentanyl for sedation. I started to vomit within hours of getting home that day and was really sick for about 3 days. The Dr said they gave me alot of the drug during the proceedure and said keep hydrated, youll be ok. Im still not feeling well. Then I thought, well maybe I got a bug or something. But that be be gone too. I feel good in the morning but right about now it comes over me in waves of sickness. I start to sweat, get real hot then I feel sick to my stomach. Maybe like morning sickness, and no Im not pregnant. Could this still be the fentayl getting out of my system?