PLEASE HELP

Everyone keeps telling me to drink water but i just throw it up! It takes me 2-3 days to finish ONE bottle of water I can't eat anything and ive had to stop going to all my classes. I can't even drive myself around. When I walk for more than 5 minutes my hearing starts to go out and I start seeing spots it also gets up 120 degrees where I live! Im 8w I have ALL day sickness and im already taking unisom and b6. I don't know what do i fear when i tell my dr shes just going to tell me to drink water and excerise but i cannot do either anyone else experienced this or have any advise PLEASE COMMENT!!!