Am I pregnant or just over reacting?

So I ovulated on the 17th and my boyfriend and I had sex on the 26th. Usually my period starts around the 1st or 2nd of each month and I haven’t gotten it yet. I’m not nauseous or anything and I’ve never had a period cramp. The only thing I have is sore breasts. I’m kind of freaking out even though my period is only 1-2 days late. Also if I had sex almost 10 days after I ovulated is it even possible that I’m pregnant, or and I just over reacting?