I m not sure if i took plan B correctly

My last 2 period cycles were of 35 and 38 days. I was playing around with my boyfriend and he entered me for like 5 seconds, also i was on day 13. The next day i took a plan B wich is 14 and normally ovuation but my period is kind of irregulate so maybe i wasn t ovulating

I need someone to tell me i m on low risk pls