I don't think you did ANYTHING wrong. It's not needy to need a medical exam. Just take a break, do something nice for yourself so you can calm down.
From lots of reading on the boards, and my own sitch, spouses seem often to switch roles, not only during their marriage, but especially during crisis, like we're all experiencing. Seems like that's what's happened with the PG issue in your sitch?
Your H seems to genuinely care about you, so let him. I think you should keep him appraised of issues that effect your health. Even though my H and I are more estranged than you and your H seem to be, I KNOW he would want to know if I was going through something health-wise.
Now stop worrying about it and go do something fun! That's an order!
It is in the shelter of each other that people live.--Irish proverb