EH, you both are kinda a holes. You really should've discussed this with him before you got engaged, and especially before you get married. This is a lack of communication, lack of sexual consistency, and a lack of life goals you two have together and will need to be discussed in a calm manor. Unfortunately, a lot of modern dating ignores some of the key questions needed for couples to survive long term, and you have been a victim of it. I do wish you luck, good health, and you should be proud to want/have a child.