What Causes Vaginal Pain,tender Breasts And Mood Swings?

hi i am 18 years old and my bf and i have been having unprotected sex for a couple months now since the first time we had sex he "blew his load" unexpectedly, and my boobs seem to be getting bigger and they're sore to most touches, my lower stomach hurts and sometimes i have sharp vaginal pains that last only a few seconds, i also have been getting really tired and i discovered i have slight mood swings, what does this mean?