Really dizzy and off

Hey ladies I have a question I know I didnt get much sleep last night (wich is normal for me) but today I'm 34w3d and extreamly off I cant seem to get out of this weird slump I'm in my head feels like its pounding but not painful if that makes sense and I feel really dizzy like I'm hung over or like I have my slept in weeks I tried to eat and started gagging I can keep water down so I've been trying to make sure I at least get that...I have my growth scan tomorrow so I'm trying to wait till I see my ob then but I'm not sure what I can do to help I've been resting most of the day as it gets worse when I walk around thankfully my kids are being extreamly good so far today and just enjoying all the cuddles and day In moms bed 😊