Struggling, 34 weeks

Hey y’all. Feel like I’m really struggling right now. I went to the doc last week bc I’m having decreased fetal movement. NST was good and we’re gonna continue every week just to be sure. But I’m constantly dizzy and exhausted and feel so horrible like I can’t do a thing. Is anyone else in a similar situation?? Doc said we’ll try and keep baby in for a few more week. I was like UM yes please. Why would we take her early..?? Think she just said it precautionary. I’m so nervous to give birth and be this absolutely exhausted and run down. Please tell me I’m. It alone.