months of sickness and I don't know what to do-help

Hi. I have a major problem, and I don't know what's wrong or what I need to do. It's a long story, so I'll try to cut it short. For the past few months, I haven't been feeling myself. I feel naseous throughout the day and I also burp a lot more than I used to. The burping gets worse after I eat or drink. They just keep coming, and whenever I have to belch, my stomach feels horrible! I have a little pain and I feel so naseous that I can't function. It's awful. Especially when I am somewhere where I can't let out a burp. When I let it sit, it feels even worse. I do this all day though, even if I haven't eaten something. I also feel very sick in the mornings. I am not pregnant, so that rules out the morning sickness. I'll get really naseous and weak feeling. Sometimes I'll vomit and others times I won't. When I do vomit, its mainly clumps of spit and that's it! I've never done that before, so it kind of worries me. I do this a lot though. Sometimes I'll get this feeling during the day. Today while I was driving (it was in the afternoon), this feeling came over me and I had to pull over to vomit. I was expecting something to come up, but nothing ever did. Just big clumps of spit as always. I hardly ever drink, but I do smoke. I lost a bunch of weight without trying to. I stress  out very easily and have been diagnosed with GAD and depression. I figured that might have a lot to do with the weight loss (I lost 45 lbs. in a span of 2-4 months). I eat, although my diet probably isn't that great. I take vitamens, and I do try to eat healthy whenever I can though. I don't know what to do about this feeling though. I thought that it would go away eventually, but it hasn't. It only seems to get worse. I hate feeling like this. It ruins my day because I never know when it's going to come up. I feel like this for most of the day, but the vomitting doesn't occur everyday. Can someone please help me?? I really need some information or advice. I just want to make sure it's nothing too serious. Please help me!!!

[mammo]

To lose weight when not trying, is a symptom.  I feel you should make an appt with a gastroenterologist and get this evaluated ASAP!

[whisperwolf]

I agree...Don't wait any longer!