Swelling Fast!!

Hope • Mommy to 3 blessings!
Lately I can't bring my self to eat anything! I have no apetite and the only thing I have wanted is lemon salt and lemon juice! My body is swelling my belly is huge I'm only 7 weeks with my first baby, Idk what to do:( 
​Someone give me some suggestions I've also been running fever for three days!