T.S.
Your hormone levels could be different with this pregnancy. It could be that you are just dry "down there". Try to water based lubricant and see if it helps with the comfort.
As for not being in the mood. I never had that issue, but maybe it's the boy baby vs. girl baby! Lol. I had both boys and was pretty much the same as if I wasn't pregnant - desire wise.
Congrats on #2!