Hi Melster - I am at almost exactly same stage as you and apart from the vomiting I have been feeling the same. I have just put it down to stomach issues which seem to fluctuate between diarrhea and constipation which seems to be the norm for me during pregnancy, and the sickness feeling seems to be hunger related, in that I wake up feeling sick in the night and in the morning but eat something and that sorts it out - although I think all the eating is giving me wind issues. The feeling up top is it to one side? - mine is on the right - something is digging my ribs or something - it feels like I need to be put on one of those racks and stretched out. Monday night I felt so off I thought might be start of labor but has settled down a bit now and think I just need to try make sure keep going to the toilet.

Anyway I feel your pain - ring the OB if it doesn't improve at all.