I may be posting on slightly the wrong forum here, but I recently lost a pregnancy, conceived at age 40, to a uterine infection at 20 weeks. It was a fairly awful.
I had been hugely lucky to have conceived quickly before (twice the first month, including at 40), and wanted to try again immediately. My husband refused saying he thought diet/exercise would reduce the chance of another infection. I tried every argument I could to dissaude him: uterine infections are rarely recurrent, that every month increased my chance of permanent infertility substantially, that there is no evidence exercise or diet decreases infections, etc. Then, he insisted on yet another ob-gyn visit to get the all clear, during which the nurse told him flat out "DO.NOT.WAIT" due to my age (almost 41). So, seven months after the miscarriage/stillbirth he agrees to try, and I had my first irregular period. Tests showed that I am now infertile. (Insult to imjury: I'm a physician, but he had disregarded me, saying "But you're not an ob-gyn.")
He admits he was wrong and has apologized, but I am still furious at him for not listening to me (I told him straight up it was "now or never") and taking away my last chance to have a child. I'm not sure how to get over it, and my anger is straining our marriage. I don't expect any responses (they are welcome, but I know I should just count my blessings). Thanks to everyone for letting me "vent."
Take him with you to your ObGyn, and let her give him all the information to make an informed decision. This might have been a more frightening experience for him than you might think. Good and accurate information is the answer to being uninformed or doubtful. Encourage him to write down all his questions and ask them all (you can even add some of the questions you had to work through to get to a decision to try again), and get his agreement that if he is satisfied with the answers, you can try again together.