Severe cramps after intercourse

Hi all, I’m not even sure if I’m posting in the correct group, but any advice would be helpful ☺️...long story short, I had the absolute episode of cramping I have ever experienced in my life yesterday. It happened a few minutes after my husband and I had intercourse, i had no pain during. The pain itself is hard to describe, it felt like a burning sensation with pressure and just overall pain, they lasted for about an hour...they resided as the day continued and luckily didn’t re occur. Although later that night I noted the tiniest of blood drops on toilet paper. I’m about 3dpo, I know too soon for anything...but I was just wondering if anyone has experienced anything like this?