You're not dumb.
There have been way too many posts recently saying, "my boobs are sore am I pregnant" or posting pictures with two very visible lines! I've even seen a post with a positive DIGITAL test, and that person still asked if they were pregnant. And let's not forget the "my bf cummed in me but might have pulled out can I get prego"
Ladiiieessss, I know we all have more common sense!