Hi T.,
Give yourself a break, here. You have a 9 month old baby. Your first. Your life has changed in a huge way. You sleep less, work more, have more to worry about, and your hormones are still not at normal levels. Ask yourself a question. Are you not attracted to him, or is it the very idea of sex right now. I thought it was my husband for a while, too, then I caught myself thinking if one more person touches me in any way I'll just lose it. That was an "aha" moment. It wasn't my husband, it was where I was in my own life and head. Physically, mentally, and emotionally I was exhausted. Sex was the last thing on my mind. I had spent the day meeting everyone's needs and this was one more need I had to meet and I resented it. That wasn't fair to my husband. It wasn't his fault. I felt bed for feeling that way, but it was the way I felt at the time. I had to break down why I was feeling how I was feeling. Instead of just reacting to the emotion I had to get to where the emotion came from. The next time you feel that way, don't just go with those feelings. Take a minute, remove yourself and really think about the "why". Did you have a hard day, did you need more help than you got, are you tire, do you feel dirty (like the days when I didn't get to shower because I didn't get the time), would you rather have a few minutes to yourself? When you get to the nitty gritty of the why you can start thinking of solutions. Do you need some time when he is home to be alone, do you need to take a bath, do you need some need met that will make you feel better, like a nap?
I also had to remind myself of the benefits of sex. I always felt better afterward. It was a stress reliever. It made me feel closer to my husband. It made him feel closer to me. He made me feel beautiful. It reminded me that we were special long before our kids came along and it put that "couple" aspect into perspective again. It built intimacy so that we COULD talk about the things that were troubling me. Men are notoriously more understanding AFTER that particular need is met.
A counsellor can help you work through some of these things if you need to go. A counselor can also help with the PTSD.
Hope this helps,
L.