Bug or baby?

I am almost 14 weeks pregnant and have needed phenergan, zofran, and unisom+B6 since 5 weeks to help with morning sickness but had no vomiting. Just severe nausea and gagging that wouldn't allow me to eat or drink. The last week or so has been great hardly needing any meds and getting my appetite back. Today I woke up feeling woozy and vomiting. I have a headache and keep having hot flashes but no fever. IVeen in bed all day keeping a cool wash cloth on my head. I am able to keep down Gatorade and a little bit of bland foods. I work with little kids and 7 of them out of 29 had the stomach bug this week. Could my symptoms be the stomach bug or pesky hormones rearing their ugly head again? If I don't have a fever and am keeping some stuff down I don't need to contact my doctor right?