Can I still take the emergency pill,even if I'm not sure he came on me?

When did you have sex?

When did you have sex?

Two days ago..

According to Emergency contraception: Pills that prevent pregnancy after sex (http://ec.princeton.edu/info/ecp.html) --

"Some people call emergency contraceptive pills "morning after pills," but you don't have to wait until the morning after. You can take the pills right away or use them up to five days after sex."

For further info, check with your pharmacist or doctor.

If he had penetration that is all that is required, there is sperm in the early fluids, so if you had sex then you can get pregnant. The longer you wait to use it, the less effective it is, after 72 hours it has little effect.