Don't want sex

I'm sure this has been asked before.

But im 5 months PP and I just don't want it. I feel so bad for hubby. I know it has to do with breastfeeding and hormones. And I had this problem with my first too but not as bad. And it did come back after weaning her. But this go round just seems worse. I dont even think about it. It takes a lot for him to even get me into it. And I even experience some pain. I do get into it after a lot of effort on his part. But I just feel bad that I never want to.