Spit up

My daughter is 17 weeks, she’s on the small side, last weight was 10lbs 13oz. She has always had an issue with puking. She’s on medicine for acid reflux and on Enfamil AR, which is supposed to be the best for spit up. My issue is, she is CONSTANTLY puking. I have to change her clothes several times a day and she can soak a receiving blanket several times a day. It’s killing me. I have to change my own clothes too because of her puking all over me. Idk what to do at this point. Her dr suggested maybe taking her to a pediatric GI doc, but now we’ve had to switch pediatricians due to a move. Her new doctor has only seen her once and her next appointment is scheduled for next week. Should I just call and get her into see him early? Or deal with it another week?