Pregnancy scare, please help

I’m 12 days late and I’ve had periods for roughly 5 years now and it has been pretty irregular. I have missed a whole period before so I’m wondering if there’s anything to worry about?

My boyfriend and I have been having protected sex and have made sure to check for holes when we finish. He has gone in without a condom a few times but only for short periods- though he always makes sure to pee beforehand to flush out leftover sperm that may be trapped in precum.

I have experienced no pms symptoms nor have I experienced early pregnancy symptoms. I currently have pink discharge when I wipe. Is that something I should be concerned about?