Confused😩😩😩😩

Basically we've been having so much unprotected sex, I had a bleed nearly 2 weeks ago, no clotting. but was like just a normal period.
Now my boobs are sore and I'm feeling sick, last time I had Sex was 25th June and 1st July just before I came on holiday.
For the past month or 2 I've been bleeding every 2 weeks roughly.
I never have sore boobs when I'm due on