I’m a bit confused

I have not had this before. I am a mommy of 3 but my kids are toddlers. I had did the deed last night but I was not bleeding and I enjoyed. I also did on Sunday night. I did a little spotting Monday but it went away with a bit of cramping today it was a little bit of shedding I can tell but I didn’t capture a picture. I will get checked later but I was wondering if that happened to anyone.