Is pregnancy a possibility??

I was on the depo shot for 2 years and got off on November 8th, 2018. Had a very very light I wouldn’t even call it my period on December 3rd to the 6th 2018. Then I haven’t had a drop of bleeding since.

But today it wasn’t planned but i had unprotected sex because I was dumb and thinking if I don’t have a period I can’t get pregnant. I don’t know if it’s true or not.

My question is. If I haven’t had my period In 3 months but I have had cramps or what you call it the past week can I get pregnant? I don’t want a kid right now but I’m freaking out.