Hyperemesis gravidarum?

I am almost 16 weeks pregnant and this is my first pregnancy. I started having morning sickness at 6 weeks but it didn’t get terrible until around 10 weeks. I started losing weight at that point and now, 6 weeks later I have lost 35lbs. I am nauseas constantly and have the worst aversions to most foods and smells kill me. I vomit anywhere from 15-20+ times a day and am lucky if I’m able to keep down a little bit of water/Gatorade and a few bites of food later in the evening. I’ve gotten to the point I just don’t eat or drink until at least after after 7pm, and sometimes I can’t keep that down either. I vomit bile all day everyday, or any kinds of liquids that I attempt to drink. At 10 weeks my doctor prescribed the dissolvable zofran which gave me absolutely no relief and I just ended up throwing that immediately back up and continuing to vomit afterwards. At 13 weeks I tried phenergan which seemed to be my saving grace and I took religiously as prescribed and stopped vomiting nearly as often. I gained a tiny bit of weight back and as I neared 14 and a half weeks, under doctors instructions, I weaned off of it as my vomiting had stopped and I was doing well for a few days. The thought process was the morning sickness was going away as I entered the second trimester. Then at 15 weeks, the vomiting came back full force so I talked to my doctor and she renewed my prescription for the phenergan, however it is no longer working. I also have high blood pressure due to my pregnancy and have been put on blood pressure medications to take twice daily. I cannot keep any kind of meds or prenatal down. Forget food/drink. I’ve lost most of my appetite and have absolutely no energy anymore. I can’t leave my house to go anywhere but work or my OB appointments because I vomit so often. I literally carry around bags in my car to vomit in. I have tried every trick under the sun to relieve this. No matter what I do or try, I vomit. I’m at my wits end. I’m supposed to go out of town and be in my cousins wedding on the 6th and I seriously don’t know if I’m going to be able to go because I am so sick. I feel like my symptoms are not being taken seriously due to lack of ketones in my urine. They tell me at every appointment that I’m not dehydrated enough or in starvation mode, and to just take the meds I’ve been given. I feel like everyone thinks I’m being dramatic but I seriously cannot go anywhere or do ANYTHING because I’m constantly vomiting! I don’t know what to do anymore and I feel like I’m losing my mind. Have any of you had any experience with nausea/vomiting at this level? Did your doctor take it seriously? I am really starting to believe this is HG. It is so frustrating to not be taken seriously when clearly there’s an issue. 35lbs in 6 weeks is not healthy..

Kindly, please don’t leave any comments with suggestions of trying ginger chews, mints, crackers the second you wake up, sips of water or Gatorade, chicken broth, nausea bands, bland foods, or anything like that. I know it’s well meaning but i have seriously been there done that and tried multiple times. It doesn’t help me and i get these suggestions everyday from well meaning friends/family.

Edit: I also am unable to use cannabis to relieve symptoms. Not only is it illegal in my state, I also work at a rehab and am randomly drug tested rip lol