My boyfriend and I messed around last night and he went inside me a few times before cuming (not inside of me though) and when I say a few times I mean it was less than 2 minutes at the most. We realized that we should stop. This was the first time we didn't use a condom and I know that I should be on my birth control (Mononessa) for two weeks before two forms of contraceptive is not needed. If I had been on it for 10 days, can I still get pregnant from the precum? Do I need to get the morning after pill? Will it mess up my birth control? I'm 19 years old.