why do i vomit after eating beef?

[imported_x_X]

i normally eat meat about once a day, sometimes fish or shrimp. but just a few days ago, i was served meat at home and later that night i started to feel pain around my right rib cages. then i had to go the the restroom more often and now mostly vomiting.
i tried to treat the pain by massaging it with Vaseline and other pain killers but it just keep coming back feeling twice as bad as before!

help pls?