What happens if I throw up my birth control pill?

I started a pack of combination birth control pills for the first time on the first day of my period as instructed and took it perfectly until the third week. In the third week, I was sick and that Wednesday about 20 minutes after taking my pill, I threw up. The following day, Thursday, I fell asleep very early (being sick) and missed the pill that night. (I usually take it at 8pm)....