Continuously sick

I will be 29 weeks pregnant tomorrow, and am completely miserable. I have been sick since 6w4d and after trying Phenergan, Compozine, Reglan, and all the over the counter stuff, I am still really sick. I am nauseous pretty much 24 hours a day, and whenever I eat, I feel that my food is stuck in my esophagus, and it makes me want to throw up. Sometimes I force myself to throw up because I am so uncomfortable. I have talked to my ob/gyn and a GI dr and they pretty much said they can't do anything for me. Does anyone else have anything similar to this, and have ANY suggestions? Smaller meals, or eating certain foods does not seem to do a thing. I seriously don't know how to handle this for another 11 weeks. I am completely miserable ALL the time.