Im 18 wks and still feel sick...

janewho

I had a very easy first trimester, but I think it's catching up to me. I was not sick at all, just tired and moody. 2nd trimester so far has been much better, expect in the afternoons. I feel exhausted, and sometimes nauseous. I also get really bad headaches (Im prone to migraines) and I get very moody. Is this normal for second trimester? I thought I was supposed to feel better!