"Last night we cuddled in bed and the first time in ages I wanted sex, however I am on a period so couldn't! "
Well hey, that's a start isn't it? Try and hold on to that, so when your period's over you can rock his boat.
Even if you "aren't in the mood" when your period is over, I think you really need to try and make an effort. You might find once you get going that you do still enjoy it. If I were you'd I'd get myself involved in planning a really romantic, wild night for you both. Candles, baths, etc etc
Also, IMHO, It sounds like you both might be in a rut personally and it's effecting your relationship.
Try getting out and doing things together that don't involve the kids, but doesn't involve talking either (thinking that sitting across from each other at a restaurant might be a bit too much pressure to try and talk about stuff) try dance classes or exercise classes or something. That will give you stuff to talk about besides your relationship.
Definitely, go see a counselor to.