Please know that I am posting this with all the best intentions for both of you. I can hopefully give you some insight into where he is with this and maybe give you some advice that will help. There are things that my wife and I could have done differently (especially her IMO) that would have made things easier along the way and if you could avoid those mistakes, you’d be much better off. Just so you know, I am young (27) and haven’t been married all that long (almost 6 yrs) and my situation is not that much different than your husband’s, so I feel that my opinion on this carries a lot of weight. Please take it for what it is worth.
This is a very serious issue. You two are treading on VERY thin ice right now. You (and I mean YOU, not him) have to be VERY careful how you handle this if you don’t want to cause years of damage and heartaches and headaches between the two of you. If that sounds scary, GOOD. It should.
Please understand that there is absolutely NO quicker and easier way to push your husband away and cause resentment towards you than hurting him sexually. Once he is hurt and feels rejected, the resentment will soon follow and it will permeate every facet of your marriage. I really think it is natural for a man to feel this way and many (maybe most) women do not understand it. When a man feels unwanted sexually by his wife, unless you have been a man in that situation, you can’t understand the pain, the hurt, the frustration, the embarrassment of the fact that your wife doesn’t want to make love to you. PLEASE be compassionate when it comes to this. Try to understand where he is coming from and do everything you can to make it easy, because it is one of the hardest things to deal with in a marriage.
When I got married, I thought that we would not be able to keep our hands off of each other and we would be making love every chance we got. Boy was I surprised to find out that is not how it was…and my wife wasn’t very understanding of the hurt it caused me. After 6 years, we are now starting to heal our intimate life from the damage done since the beginning of our marriage. Most of it came (IMO) from a lack of understanding of each other. I thought it was something that she was just supposed to give me whenever and it should be easy for her to do so and she should want to. She thought that it was no big deal for me to do without just because she didn’t feel like it. You have to meet in the middle. I also didn’t understand that my attitude and actions throughout the rest of the day (like being in a bad mood or not helping out enough) caused her to not want to be with me. She didn’t realize that her lack of intimacy made me not want to go out of my way for the little things that were important to her. Someone had to budge first. It was me recently…and things have started to improve…a little. None of that has much to do with your situation right now I guess, but I just want you to see where you will get if you don’t solve this problem now and do it in a loving, understanding, compassionate way.
It takes a lot of maturity for a man to get to the point where he can understand that abstinence for a couple weeks does not mean he is not loved by his wife. I am just getting there at 27 after 6 yrs… But you can help him so it doesn’t take so long. You need to do or say whatever it takes to make him not feel rejected. When you said “I’m not willing to do this anymore”, he heard “ She doesn’t love me enough”. I would bet my paycheck on that. So now, after fighting his masturbation problem for all his life and thinking it would be solved when he got married, he is now thinking that he is going to be a married man that will have to take care of himself in that regard. It hurts our ego and self esteem more than anything else you could do. I promise. You can’t imagine the feelings of embarrassment a married man has when he feels that he has to do that because his wife said she doesn’t want him. Help him and BE UNDERSTANDING of his feelings. As a woman, you do not understand how difficult it is physically for us at times to abstain from sex. After all, that is one of the reasons that we got married—and now we are being told we can’t do it!
There is a lot more that I was going to say, but now I can’t remember it…maybe I will later.
Oh, and when you are not fertile, be like rabbits.

It will make the times of abstinence MUCH easier to deal with when he knows he only has to hang in there a few more days and then all his waiting will be worth it.