5DPO & painful sex for the first time ever ⁉️

I’m 5dpo (confirmed with OPKs and bbt chart). We BD every day during my fertile window. So last night we had sex for the first time in a few days since I ovulated. Everything was going fine then all of sudden - ouch! TMI(?) but I personally don’t think it was the position or if there was enough lubricant. Everything was how it usually is. When we stopped, I had a sharp shooting pain in my lower abdomen/maybe pelvic area? It went away after 10-15 minutes. But this has never happened before! I don’t check CP at all. Is it possible my cervix was low and he was hitting it? Thoughts?