Weird bleeding

Hey there ladies! So on April 13th was the beginning of my last period. It lasted the normal 5 days for me. Then during my ovulation time I had very light spotting for 4 days like only when I wiped it was light red. Me and my boyfriend had unprotected s*x a couple days before and after my ovulation time. Then the time for my period came and it never did. I started feeling pregnancy symptoms, sore lower back, achey boobs, tired, peeing frequently. Then when I was 12 days late I got cramps that normally come with af and I had mild bleeding for 2 days only. Im wondering if I could possibly be pregnant and the bleeding was breakthrough bleeding or what?