Hope your feeling better soon!!
Persist with the doctor / hospital if you don't feel right go back and tell them your not any better, there must be something that they can do!

I've had bad morning sickness this time but no fever, fainting or dizzy, I can't eat or keep food down.
Get it checked out, don't feel silly about pestering them that's there job. You'll know if you don't feel right, keep at them!
Kelly