I have a sort-of embarring question for other women out there...?

I just had a baby five months ago, but not lly; she was born c-section. However, now whenever my husband and I have , I end up all swollen and sore "down there" and once in awhile there's just a trace of blood. The feeling is usually gone by the next day, but I just wanted to know if this is normal and if there's anything I can do to prevent it. We tried using lubricant, and also engaging in a longer amount of , and still I got the same result. Have any of you experienced this problem? Thx. Guys, if you clicked on this question and then tell me it's TMI, remember I DID say in the header that it was a question for women! ;-)