Yes, you could be pregnant. Ovulation timing related to menses is different for many women, which is why the “rhythm method” is a lousy birth control practice..

You can get yourself the morning after pill, I believe you are within the time protocol.

I had sex last saturday

You may very well be pregnant or you might just be having an abnormal period due to you forgetting to use your birth control properly!!! IF you really don’t want to get pregnant, you should worry more BEFORE jumping in the sack. After the fact is a bit too late!!!

Stressing on it can cause a delay, too. Try to relax. If nothing happens go to the doctor to see.

Take a pregnancy test and if you are not pregnant , go see a doctor about that pink discharge..could be something else?

It’s possible. If your body worked like clockwork and you weren’t on any birth control, you wouldn’t be ovulating that late in your cycle and you wouldn’t be pregnant. But you’re on birth control. It’s more likely you taking out your birth control caused your period to be delayed. But depending how quickly the birth control left your system, you could have immediately ovulated, gotten pregnant, and the pink spotting could have been implantation bleeding. A lot of different possibilities here. Test now and then test in a week. Then you’ll know for sure.