Found out we r expecting number 3 earlier this month.

At first I was feeling great this last week has kicked my butt. I have hypothyroidism my dr said my levels are good. I'm crazy tired to the point I can't stay awake when home with my other 2 kiddos, can't sleep at night and I have this neasous feeling but not vomiting can anyone help me out on how to get rid of that feeling... I know it's a symptom and I know they can prescribed meds but I'm sure that's only if I'm puking all day. I get the feeling to vomit then it subsides for you know a few minutes.