Cramps and spotting

I've been spotting on and off since a few days before my ovulation. Until about two days ago I finally stopped. I've also had cramps every single day since I started spotting and I still have some along with lower back pain. My periods supposed to start next week. I'm just confused on why I spotted for so long and still have cramps. My fiance and I had sex last month on my ovulation date and the majority of this month. Especially around my fertile days. Could I be pregnant or is my body just acting funny. I am on bc but I'll be honest I forgot a couple days this month because I work over nights and forgot to take it before leaving for work😒🤦🏻‍♀️🤦🏻‍♀️🤦🏻‍♀️🤦🏻‍♀️