Getting "fixed"

Maybe this is in the wrong topic area but not sure where to put it. I am current almost 16 weeks pregnant and my husband and I also have a six year old son. My husband and I decided that two kids are enough for is and we will have are boy and girl :) we just feel like are family will be more complete with the four of us. So my husband and I decided that one of us will get fixed so we don't need to worry about getting pregnant. What do you ladies think about this?