Having such a hard pregnancy

I've been having a hard time with this pregnancy. I am 33 weeks pregnant and have been consistently sick and dizzy. Not to mention the consistent migraines. The doctors cannot figure out what is wrong!! I am on 9 different medications and take more pills a day then I have ever taken in my life. Everyone on here seems to be enjoying pregnancy and I just can't help but to feel so alone. It's making me extremely sad to miss out on the entire summer with my son and I have such guilt about it. I just wish I could enjoy this like everyone else. 😞