Pls let me know

So my next period is in 11 days and in November I had sex only on the 2nd and the 25th. And my period came from the 16th to the 23th. We used protection both times and condom did not leak or anything, but I’m still worried I think I look a little fatter and my boobs are sore but my period is supposed to come in 8 says. But my bf is sure we were safe and I just need someone else opinion to make me feel less scared