im 30 weeks and yesterday i started throwing up at 7:30 am allllll day long i even threw up water!…

im 30 weeks and yesterday i started throwing up at 7:30 am allllll day long i even threw up water! my baby stopped moving as much as he usually does so i went to the doctor and was there for 4 hours. got a whole bunch of tests done. baby is fine. they sent me home after telling me it was a viral infection and should go away the next day but today i still feel nauseous and i cant eat anything. yesterday i didnt eat and today i didnt eat. im scared for my baby because hes not getting any food. what should I do? has this happened to anyone else before?