Yep, some pain here too, but none of this is new to me so I wrinkle my nose and move on usually.
I don't know if I've had a decrease in interest... but, you might call it that. Or you might just call it I'm too tired and don't care.

But it's always been backwards in our house anyway - I'm the one who needs it and hubby could care less. He works nights so we almost have to PLAN it for it to happen anyway, so it hasn't happened but once or maybe twice since we found out we're pregnant. For my usual desires, that's a pretty low rate, but again I think it's mostly about being tired not about not being interested.
But yes, the pain is normal as long as it goes away.