Sounds a lot like I was. I felt HEAPS better in the 2nd trimester, but I was too big to be able to finish a meal in the 3rd. I remember being in hopital the day after I had Caeleb and was shocked that I could finish a meal. Try vegemite on toast. I lived on it for ages while I had nausea. I think because it's salty?!?

Try to keep your tummy full always. Snack on dry crackers and sip ginger beer through-out the day. Might help to eat something before you get out of bed in the morning too.

HTH