Hi Im 33 Weeks Pregnant And For Past Two Days

Hi im 33 weeks pregnant and for past two days i been throwing up all day i cant keep nothing down i eat fine one minute the next i start throwing up after i drink something and the same thing i feel headaches and pain in my belly especially while throwing up i literally have to stay next to the tiolet becuase i keep throwing up i dont know what to do im scared and its bothering me alot