Help?

Ivy • Mama of 2💙

So my boyfriend and I had unprotected sex in November and December , not trying to get pregnant , he pulled out but I’m really emotional lately and I had a period? Dec 29 - 30 but it was heavy the first day and nearly gone the second .. usually they last 5 days .. should I take a pregnancy test or am I just overthink stuff? Could I possible be pregnant?