So currently i’m on my second pack of bc and literally 10 days ago which was thursday (my ovulation day) i had sex that whole week assuming i was good cause of the pill and me religiously taking it the same time everyday and i was late that following saturday by like 40 minutes but leading up to today i’ve been slight bit nauseous and mood swings (which are normal to me) and today (10 dpo) i was spotting when i wiped and slight cramps and back pain and my period is supposed to come in 3 days .. is it breakthrough bleeding my period or pregnancy ?