I've been having trouble concentrating and sometimes feel restless and I told my OB he said it's normal in pregnancy...but also I've been getting heart palpitations and I'm not sure what's up with that...
That happened to me earlier in my 2nd trimester. You probably should eat like a light snack every 2-3 hours or so to avoid feeling that way. Hope it helps.
I had really bad problems adjusting my meals at the beginning of my pregnancy. I had to leave work a few times. I found that if I keep eating three meals a day I have to snack in between. It's extremely hard for me to go a few hours without food now at 33 weeks. Best of luck!