Is my marriage fixable?

[Christina M]

My husband and I have been having some on again off again problems. i think part of it is we don't make love anymore. it's not that i don't want to and i don't want to push him away but i had two miscarriages within 2 year span and found out i have hpv and had to get surgery for precancerious lesions. he was my first and i married him and haven't looked at anyone since. i know not have a sexual connection can hurt a marriage but i didn't think it would get this far. he does respect that i cant because of what happened but at the same time he has needs which i also understand. he's been really stressed out because his ex came back into his life and she is allowing him to see his kids after two years of withholding them. he's having problems at work as well with set ups of trying to fire people. i feel like we can work on this but i don't know if it's too late. he has left twice and he's never done that. but i think he's had it. i don't blame him but i want to work at it. continued..
this last time he left i found our car at his ex's house. automatically i believed he was with his ex but i now have thought about it and think it was actually about his kids. i know men and woman can be vulnerable but i don't think he'd go back with someone who is pregnant with baby number 4, has 3 baby daddies, is on welfare with no job and has no real income other then that. i don't think he'd throw our most of the time great relationship to be with someone who he has no future or purpose other then income with. i have denied that that could be it but when it comes down to it it just doesn't make sense. yet he keeps leaving and doing things and at the same time he's trying and willing to make it work. i think he misses the intamicy. do you think this could very well work? we've been together for almost 6 years and i don't want to throw that all away. i am willing to change my sometimes hard to deal with moods. my hormones are out of control. probley because the miscarriages.