If you have a good doctor, they will ask you to go away and think.
Only you can decide. Its an easy op to do, but very hard and painful to reverse
A good doc will ask you to consider how strong your relationship is, in case you break up and meet someone new
(In your case , as you are on here, your r/ship cannot be that strong)
How old your kids are? If they are young, if something bad happens, a natural reaction is to try and have another.
Talk it over with your doc.
Condoms arent so bad
Biggie