I've gone months without having an orgasm. Never really felt much different, other than a full feeling down there. It felt good being all horned up all the time, and ready to blow at a moments notice. But hell if my girl liked to give bjs and swallow all the time, I would be dry as a bone.
I have to agree sometimes when the need to cum is in my head I have a strong drive and can't think of much else, Luckly I have a girlfriend who helps with these strong drives just like your husband has you!
Regular masturbation can lead to penis numbness. Try stop masturbating for a week or two and your sensitivity/orgasm will come back!