Becoming someone I don’t know

So the title basically tells it all. I love this baby, but this pregnancy has been horrible & it’s turned me into a different person I feel like. I’m always puking, having diarrhea, or being lightheaded. I’m SOOO over it! I’ve been to the ER they gave me a bag of fluids, ran my blood count, did different tests on me ..they say I’m fine. But they problem is I don’t feel fine. I feel completely exhausted I have zero motivation, Im nauseous almost all day & it’s all I think about. I don’t have the energy to play with my son like I used to, it’s really sad. I just want to be normal again. Does anyone else feel this way?