Gallbladder Issues?

I woke up at 1am with what I assumed was acid reflux. After about an hour, the pain grew to a pretty high level and was accompanied by some pretty bad upper-middle back pain which then started to radiate to my upper right, under my rib cage. I was so uncomfortable I couldn’t even move but I kept having to throw up. It started to go away and was replaced by an INTENSE hunger (the original pain was about 90% gone at this point) so I had a bit of smoothie I had leftover from the day, which has been the only thing I’ve been able to keep down. The pain came roaring back. I’m usually a quiet puker but last night I was RETCHING. It hurt SO badly. Has anyone else experienced this? It finally went away enough to sort of sleep at 6a but I feel like it could easily come back. I almost went to the ER, but it takes a LOT for me to do that. I’m 6 weeks pregnant today…help!