Pull out method? (Sort of) TMI

My boyfriend and I had unprotected sex last night and he didn't cum inside of me. It was literally a few strokes then he took it out to jack off and cum. He peed before this! I am a bit hesitant because we are usually protected, and we are in no position to have a baby.. Did anyone have a similar experience and not get pregnant? Or should I get Plan B?  
Also, my projected period is tomorrow.
Update: I got my period 2 days late, very bad cramps

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