Should I panic?

Lu

So my bf and I tried to have sex about a week ago ((it was also 2 days after my period) and we didn’t fully have it bc I was too tense so only a very small portion of the tip went in but he didn’t nut or anything. As of right now my breast are sore and idk if that’s bc my next period is coming up (in about 9-10 days) or if it is for another reason. PLEASE PLEASE HELP ME