Had protected sex but period is delayed. Paranoid.

Hey everyone,

Last Nov 17, I took ECP and a week later, I got my period. I had protected sex last Nov 30 and my BF was certain that it didn't break nor slipped. I was supposed to get my period the week of December 24th. December 30-31, I took another dose of ECP to induce my period but there's still none up to date. There are PMS symptoms but that's just about it.

Last January 5, I went to a doctor for pap smear and she checked my cervix then said that I'm not preggy. She took my urine sample for a PT just to confirm and it came out negative (I'm 11 days delayed when I took it).

I'm still kinda paranoid about this whole thing since I read stuff about false negatives and all. I just need to quiet my head about this but I just couldn't stop thinking about it.

Any advice will be so appreciated. Thanks!