I feel normal, but have been throwing up since last Sunday. Does anyone know what's wrong with me?
You maybe pregnant.
You could be experiencing gastroenteritis, migraine or appendicitis. It could also be because you are pregnant. The best thing to do is to visit a doctor for diagnosis and the various tests to determine the exact reason for throwing up.
I agree with Lobo. You're carrying a child :D
You might be sick or have a parasite. I can't know for sure because I don't know the symptoms your having