TTC with zero sex drive

Sidney
Ever since I had my son I have had absolutely no sex drive. No matter what I do, how good my husband looks, it has been almost a year and I still have absolutely no desire to have sex. We really want to have another baby but sex has become a chore even though the sex is still great. I don't want my next baby to be conceived with the thought process "let's just get this over with so I can get pregnant". Help??