What do you think?

According to this app my period should have started a few days ago. But Everyone knows that it’s not always right. The guy I was dating, we did have unprotected sex a few times. But I have always been on bc and his sperm count is low. I have checked my cervix and it’s high, hard and closed. I know that’s not a way to check for pregnancy but has anyone ever felt their cervix in the beginning of pregnancy? I plan on getting a test. But just want some other in put.