Any help??

I had sex three days before I ovulated, fast forward, my period is late by 7 days, I have Montgomery’s tubercles? Not many but like 5 or 6 on each one, and. My breasts they got bigger like almost falling out of the bra, I'm already big but this is ridiculous and my nipples are sore, I also checked my cervix it's really high and soft, and i had cramps but they were light and lasted a day...any help? Is it just a late period or something else....