Sore boobs???

I have unprotected sex with my fiancé (he pulls out) and I'm well aware of pre-cum. I got my period last week, on the date I was due. But I was much lighter & the blood was more brown from start to end. I had sore boobs before my period but they still hurt now. They're really tender 😔. Do you think this is just a normal hormonal symptom or should I maybe take a test? 
Thanks ladies! xx