I agree with the ladies below.
I think you'll get better responses if you specify if you're just not feeling it, if you're not feeling attracted to your husband specifically but still feeling sexual, etc.
Everyone goes through phases. That's pretty typical I think.
Every couple goes through phases.
For me personally, when our kids were small and my husband was going through what I thought of as 'boot camp' (just getting through it together), I was heavily into him because we worked side by side, and he was so supportive. That was very attractive to me.
Later on, when we split duties up and I handled stuff at home, and he would chauffeur kids about, and we barely saw each other - harder to feel connected. You have to work at it. Make time to connect - fit it in. For us - that's here and there, coffee dates when we run errands, sometimes watching a movie - catching a movie when there's one we really want to see. Couple time with our friends where we can feel like 'people' again. Helps you see each other as a guy and a gal again and not just a mom and a dad to your kids. Anything you can do that is fun.
It's great with your family, but also together - as a couple.
If it's you (you're just not feeling it), sometimes exercise helps, getting your blood work checked, sleep, making sure you're getting helped, and stress reducers ... etc. Time for your interests and your own fun too.
If hubby is not looking after himself, and you're not attracted to him in the same way (you're not seeing the man . then have him take time for himself too. Moms and dads need their own time so as not to lose themselves. This only helps relationships.
ETA: BirdsFreakMeOut - the Miranda quote ... lol. Remember that, and can relate..
A friend of mine bought a vibrator and gets herself there 'quickly' and that helps. Sometimes the time crunch can be a turn off when we're rushed. I know, hardly romantic but quickies can be fun. Whatever works right? So long as you find something that works .. because resentment from one party can be a real downer and you don't want that.