Anxiety

Okay, so I have an irrational fear of becoming pregnant. Now, I had to miss a week of BC. That’s a long story. So I know I may miss my period and there’s a high chance I will, but I started having pretty bad cramps 6 days before my period. I’ve had them before. So I’m confused to if my period will come or if I’m having implantation cramps. My boyfriend and I had sex like 2 days after my last period and then again like a week before ovulation. Both times we used protection and even made sure that nothing escaped the condom. So there’s literally no way I’m pregnant. So is there anything I can do to calm my nerves?? I also have IBS so I don’t know if period cramps can feel the same as bowel cramps.