Full time step moms, that don't have any biological kids?

I am a full time step mother and have been for 9 years, and I do not have any biological kids, My husband had a vasectomy after his second child. I would love for my husband and I to have a child, and before we got married he told me he wanted us to have a child, and wanted to look into some of our options for doing so. Im trying to make a long story short... Ok so once we got married, and I asked him about it, he said he had changed his mind and did not want anymore kids. People have told me I should get a divorce,and meet someone that I could have a baby with, but my response to that is if i wanted to have a baby with someone else I wouldn't have married my husband. Im just wondering if there are any other women out there in the similar situations, and how do you deal with something like this?