Last night I threw up and I thought it was from the food or bc I had a couple of drinks, I felt fine today. Tonight since about 7, I've been having severe stomach cramps and I just threw up for about 15 minutes. I felt better but the stomach cramps are now coming back. I was fine earlier today. I don't know what this could be, this is my first month of taking yasmin birth control. I ate red meat last night. Should I go to the ER?