the difference?

Hi! I am currently on day 27 of my cycle. My husband and I had sex during ovulation unprotected. My breasts lately have hurt. Usually they are sore prior to my period, but is there a difference between the feelings of them being sore for period vs being pregnant? They hurt to the touch and sometimes even when I'm not touching them. They are extremely sensitive. Thanks for any help! I haven't taken a test yet because I figured I would wait and see if I missed my period first.