I want a third baby and husband doesn’t!

When I was pregnant this time, I had a very hard pregnancy and agreed with my husband that we were done. We have one boy and one girl (2.5 years apart). Now that the craziness has died down, I want a third baby in the future. Not now, but maybe 4 or 5 years. My husband is adamant that he does not want to have another child and he wants to get a vasectomy. What should I do? I am 30 and he’s 34, I feel like there’s a lot more years where things could change and he shouldn’t get a vasectomy.