Sore boobs but no period yet?

My last period was the beginning of this month (January 2-5) and now it’s the 27th and my boobs have been a bit sore and tender for a couple days now but no period and the soreness is slowly going away but they usually go away after I get my period, but I didn’t get my period yet. Any thoughts?

~ I’m 19 and a virgin and I’m not on any pills.