Late Period

Tatyana

According to the app , I was supposed to start my period around the 16th, but I also had unprotected sex on the 14th. I think I ovulated a week before that. Currently my period is a 11 days late and been having light cramping for the past two days. I took one test it came up with a faint line and another that came up negative. I have my doctors appointment coming up but I was wondering if anyone else went through this or have a suggestion?👀