What happens if you have sex before a 6 week check up?

Firstly I most definitely do NOT want to have sex any time soon 😅 I'm nearly two weeks postpartum. I genuinely feel very open down there it's not even a thought. Time to heal...

I see people posting about being pregnant at their 6 week check ups etc and I am shocked!

But what would really happen if you had sex before then but wasn't pregnant? I think some people should take advice lol