He Came Inside Of Me!!!!

I positioned myself over my boyfriend and let him enter me. I literally went down and came up once on his dick. He stopped me and told me he thinks he is about to cum. I stopped moving and just leaned forward to kiss his neck. He then tells me he DID ejaculate inside of me!! That was two days before my period is scheduled to come. (Today) It's 3:55 and I've been freaking out about it. He ejaculated inside of me...I tried to piss most of his cum out and pray that my period comes on schedule...The day isn't over and I know I'm not considered late yet..but damn the anxiety is so bothersome. My period will definitely come, right???