Did anyone ever have really bad nausea? I don't get sick but sometimes it's so bad I want too just…

Did anyone ever have really bad nausea? I don't get sick but sometimes it's so bad I want too just to make myself feel better. My doctor gave me medicine for it but it doesn't seem to help a lot. I never had any symptoms with my first 2 boys except heartburn. I feel like I'm getting the flu and I want to sleep all day then I feel bad when I get up like I've sleep too much. I also have a bowel movement at least 3-4 times a day. I just feel like something isn't right but the doctor said everything is fine. I didn't do any of this with my boys. I'm only 8w and 2d. I feel horrible. Any advice would be appreciated.