I have completely lost my appetite.

I'm 37.5 and I have absolutely any and all appetite. Nothing looks good, sounds good, smells good, etc. Any time I get hungry within the last few days, it takes me hours to find something to eat, and it's usually not even something that sounds, tastes, or looks good... And I have to literally choke it down. Also, anytime I eat, I get extremely nasceous and can barley hold it down to make sure baby is getting enough calories and what not, because it literally feels like my body as a whole is rejecting food lately...