I'm so sorry to hear you've been having such a rough time of it!! I know the doctors can prescribe medication for severe nausea and would have thought they'd have done so with you by now (a 35 lb. Weight loss is extremely alarming!).
I was 19 when I was pregnant with my first son and I experienced the same type of all-day-long sickness for weeks and weeks. I lost 11 lbs. By my 2nd trimester and just thought I was going to die from all the throwing up. It's miserable and I hate hearing when others are going through it!
On the bright side, I felt queasy and slightly nauseous at times w/ my 2nd son but didn't throw up once. Now i'm pregnant with my 3rd child (9 weeks along) and I can smell everything in the word and feel queasy at times b/c of it, but I haven't thrown up at all.
Anyway, my experience indicates that it gets better - once your first trimester is over, it should start to ease up a bit. Make sure to ask about the meds and hang in there. Definitely look into the motion sickness bracelets - they should sell them at your nearest pharmacy. It supposedly has some sort of accu-pressure theory behind it. Also, I saw something called "preggo pops" that were lollypops to help w/ nausea in pregnancy. They're sold online but I saw them at a maternity clothing store called motherhood.
Keep us posted, get some rest and focus on the gorgeous, healthy little baby you'll have at this time next year!