15DPO 🌺 pregnant?

Okay Ladies, what do you think? I’m currently 15dpo and I was supposed to start my period yesterday. And still have not started. I have had sore boobs since 7dpo. Still sore tmi but especially my nipples😩. And about 11 or 12 dpo after my bf and I had sex tmi (had an orgasm idk if that has anything to do w it) and about a min later I had horrific cramps where I had to tuff it out with my legs tucked in(it hurrrt so bad) lasted about 2-5mins. Also have been getting waves of nausea sine about 7dpo. I have taken a few tests a few days ago and negative. Do you think I’m pregnant? Something else going on?? Would love your insights please!!

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