Probably just paranoid

Soooo, a little back story. I’m 21, had my first when I was 18. The dad and I have been living together for 2 years now and everything is perfect :)

I know I might be over thinking about this but my boobs never hurt before.

They’ve been really sore the last week and have gotten bigger, so much that none of my bras fit without having a lot of underboob.

My period is supposed to come in 4 days, we do have unprotected sex but he pulls out. But my last period was very very little flow and only lasted like 4 days. I guess I would say it was more like spotting.

I know all the signs kinda seem like I should take a preg test but also I’ve never had a mammogram and cancer runs in the family.

I’d like to hear your opinions please!