Vasectomy regret

My husband had a vasectomy a year ago. At the time we both needed it ( 5 kids, 7 and under), especially when my son was born. Now, I have regret and sadness that there will be no more babies. I am 35 and wish we had 1 or maybe even 2 more. I feel crazy for saying that because we have enough crazy as it is, but I love having a big family. How can I get over this? Thr vasectomy was successful as I have hoped each month doing the deed during ovulation may make me pregnant but it has not. Thanks❤️