I was having trouble too, and didn't even realise it until I went for my annual. My doc remarked on how dry it was down there and gave me a prescription for estrace cream. Apparently, breastfeeding causes a reduction in estrogen in your body, and you need a little extra to keep up the natural lube. You might want to ask your doctor about it too (it's made us a whole lot happier!).
Re: s/o sex.... lube!
KY is good. Just the normal kind. We got the His & Hers before and it didn't seem to make any kind of difference.
This. And stay away from flavored ones.
Proud Mama to Mickey (12.03.09) and Nemo (06.06.13)
FI & I swear by this stuff.
https://ww2.pureromance.com/PublicStore/product/Pure-Pleasure,276,143.aspx
or really anything from this site. ;-)
Ugh, SO tried to use that on me once. I was so not happy with him.