anyone else sick all the time

WTH... why have I been sick with a cold feels like every other week. I had the flu about 4 weeks ago and got over that. Period finished a week ago been having sex with my bf a lot lately. Now he has a cold too. Two days ago I threw up my dinner just started feeling sick and then yesterday went to the movies with my best friend and I was getting in my car about to drive home and I threw up outside my car before leaving the theatre parking lot. Why am I sick all the time?