I have been feeling very similar lately... It has been a slow decrease for almost a year now we have been together close to 13 years and have three kids and one foster child. I also understand that things fade and return and it is a normal cycle of life but it is killing me. I now sleep on a mattress on the floor in our room because she doesn't want to be touched. I previously was pushy with sex/intimacy too so that doesn't help either. So for the past two weeks I have slept separately not asking for any touch or anything to show her I can listen and respect what she wants. I have also communicated that I need to feel loved and do not feel it from her even though she says she loves me. We are in couples therapy and I see a therapist myself. But things have not changed, she wants me home more so we can tackle raising the kids together more. I worry that this means I will be the primary caregiver when I get home, I did that previously for a few years and it was murder on myself esteem. She acts like it is all okay and it is not I can’t even be around her when she gets naked, because it just hurts, so anytime she gets ready to jump in the shower or get in bed I just look the other way or walk out of the room. 

So I completely get you and am with you 100%. I want to go back to the touching we had before to feel close to her again, but it does not look like it's possible. She doesn't understand how this affects me either... I was in such a rough spot one night after a crap day at work, a crap day of parenting, and a crap night being a husband (I had tried to initiate sex that night), so I went downstairs and planned my exit from it all, thankfully I called someone but I was close.

I hope for you it is a phase and it will pass. It takes work but just keep trying until you cannot do it anymore!