Morning sickness?

Jesi
I'm 31 weeks and I've been feeling sick since I woke up Monday morning. I've been eating and even then I still feel sick . I didn't even think I could finish my lunch today. I've been drinking lots of water I just don't understand why I'm feeling so sick and nauseous. Has anyone felt this way towards the last 10 weeks. Im not having any bug pains just what i believe to be gas. No pressure besides that it feels like hes parked on my bladder. And hes moving around fine has been all week .I'm worried now that my mom said she felt this way with my brother and he passed not even 24 hours after birth. Can anyone give me input.