21 weeks with still constant intense nausea but no vomiting

I’ve had unrelenting nausea from 6 weeks and am now 21 weeks. My midwife doesn’t seem to care since I’m gaining weight and not throwing up. I can only brush my teeth every few days. I got through the motions of throwing up, dry heaving but clench my jaw constantly to keep everything down . I’m having trouble with liquids, just getting them in. The word water makes me gag. I’m in unisom constantly and that takes the edge off. Zofran didn’t do anything. Honestly I want to go to the hospital to get an iv and some Relief but I feel dumb because I can just drink water. Any advice? Thoughts?