Pregnancy and period

Okay, So my period has always been SUPER regular. This month I thought I started 3 days early (which threw me off) ...but was was only a tiny amount of blood.

Throughout the week I’ve had maybe two/three drops of blood until today, I had a tad bit more. I have had minimal discomfort but that’s it. Not like a regular period. I am sexually active and my boyfriend uses pullout method 😬

I’m kinda worried... we just bought a house together and want to enjoy ourselves for a good year or so... had someone had this happen to them before?? Help!