Disconnected..

I feel so disconnected and unattached to my husband recently.. I love him, but during sex I'm just completely turned off and never in the mood anymore.. But the thing is, he hasn't been able to finish and just gives up in the middle and says "I don't see this going anywhere" and stops completely! I feel so f---ing ugly and undesirable.. We both want a kid, but how the hell is that supposed to happen if neither of us even want to have sex.. Everything is so depressing. I hate it.