Want another baby!

I never thought I would have any kids after I met my husband and he already had one with his ex and was so against having another one. Now we have our precious 16 month old and I want another one! But the problem is he had a vasectomy after our son and it would cost a ridiculous amount of money to reverse it and a lot of pain. Can I ever get over this urge? Has anyone gone through this? I never even thought I was the motherly type and now that I had my son and see how great our relationship is I want another one so bad. I’ve thought about adopting but that is so expensive too... It’s the opposite thinking that I had before I had him because I didn’t think I would be a good mother but now I know that I am and I can’t have another one...