Worried that I'm pregnant

Okay so I take my pill every day at the same time and I got my period last month and this month when it was time for my period I bled only a few spots of brown blood and it only lasted about two days not even. I have regular sex with my boyfriend we don't use condoms but he never cums inside of me. It's been a few days after my supposed period and I'm experiencing mild cramps. I haven't taken a test yet but I'm scared I might be pregnant.