I'm 27 years old and have made a few mistakes in my life. Not sure if i can really call this a mistake, but i had sex with a guy i was having some feelings for, we used a condom also checked it to make sure there was no leaks or tears after we were done and blew it up with air to confirm, there were no holes tears or leaks it is still holding strong to this day. I received my period on June 6th it continued until June 12th, we had sex on June 18th. My periods are usually irregular sometimes very irregular, but i havent received it for this month yet. I know i need to take a pregnancy test to ease my mind but i honestly dont think im pregnant. What could be causing this? could i be over thinking it? The condom didn't fail, why is my period late? I know im a little long winded right now please forgive me im just scared and confused.