I want another child and my husband doesn't. Is it possible he'll change his mind?

There's a good chance. More than likely, it'll happen around age 4 or 5 though because that's when things really settle down and fall into place. Try your best to keep a tidy house and a pleasant atmosphere. Also, don't bring up this discussion especially don't bring up the word vasectomy because once a guy gets that in his mind, then he thinks it's the answer to everything and will likely do it on the spur of the moment. Vasectomy is hard to reverse; once through it, many men just want to leave things be down there. Instead, you take care of the birth control and be very careful not to fall pg. If he knows you are reliable in that department, he'll be less likely to get drastic and sterilize.