Sex after delivering the baby!

Sarah
Hi ladies. I delivered my baby 8 weeks ago. While having sex Am getting a very uncomfortable burning sensation once contact is made with the condom (which is our birth control method so I can't take condom out) knowing that this brand has latex but I never had problems with it before. It's been the one brand we have been using the past years with no prob at all. 
I couldn't even continue. I had to stop my husband right away. It took only seconds. Then trying to pee & it's still Burning. 
Anyone had this before ?