Feeling like a failure :(

I feel like such a failure. My significant other was sentenced to a year in jail when I was just a couple months pregnant. I gave birth to our son in November and our relationship has been on the rocks ever since (despite the jail thing, of course). He is in a prison about 5 hours away from where we live, so we have not visited him, nor do I personally want my child to be in a prison (germy, yuck!). The straw that broke the camel's back was Mother's Day. He didn't send me a card or write me a letter or anything. I was hurt and angry and shocked that he would not send a kind gesture of some sort. I have been paying our mortgage and maintaining our home, feeding and caring for his many pets, AND the obvious--raising and caring for our child, HIS child, without any assistance from him or his family, financial or otherwise (props to his Mom for watching the baby a couple days a week while I work, though). When I asked him about this today, he said he didn't send anything because he didn't think to, because he doesn't really think of me as the mother of his child. He said he's been pulling away from me for a while due to decisions I have made regarding the baby that he disagrees with. I was so upset about this that I am seriously considering "breaking up" with him. We were planning on trying to rebuild our relationship once he is released, but after this I just don't think it can be repaired. How will he magically one day respect me as the mother of his child? But I can't fathom the thought of my child not growing up in a home with a mommy and daddy putting him to bed every night. I feel I have failed my son miserably. I thank God for my son everyday, but I should never have brought a child into this situation. He is the one who is going to suffer for our shortcomings and it breaks my heart. I have been so happy and positive until this, I have felt like SuperMom working full-time and raising this beautiful child, paying for our home all by myself, providing him with everything he needs. But today I feel like a failure.