I'm concerned

me and my magnificent boyfriend have been in a relationship for almost a year now. we've been having sex since July 2018. last Saturday, December 29th. he came inside me, and I found out later that I was ovulating. I have the implant in my arm and he's came inside me multiple times, sometimes while I'm on my period. we aren't ready for a kid, but would love the kid if I was. we know we want to get married, we're both adults. I'm just worried that I am, I know I'm not ready. right now, all my emotions are severely heightened, I'm constantly eating and having to pee. there's been almost no discharge and my periods are very, very irregular. what is the chance of me being pregnant?