I don't feel like having sex with my husband. Just don't feel attracted to him sexually anymore. I don't really know what to do. Is a sexless marriage ok? We have 3 kids.

I think it's just exhaustion. Reckon you're still attracted to your husband, just too tired and perhaps no opportunity to be intimate with your husband. Try getting some help with the kids for one night and have a special date night with your husband. That's a good start to rekindle your intimacy and attraction.