I don't reccommend you get a depo shot if you are not using it for its sole purpose as birth control. With any birth control there are side effects. Depending on your body depo can cause excessive weight gain, changes in your hair texture, hormones, and if used over long periods of time you become high risk for osteroprosis. (I know I did not spell that right). I know you want to be period free but that is not a good reason to take the depo shot and I don't even know if your doctor would prescribe it just for those reasons. Now if you are concerned that you might get pregnant even though your tubes were tied,(because that has happened but it is rare) then I would suggest the depo shot because it is very effective. Also if you do get the depo shot and it stops your periods, when it is time to get another shot you might be on your period nonstop until you get the next shop or until eventually your body adapts again to not being on the shot, which could be a couple of months or so. Can you imagine spotting and having a period for an entire month? It could happen. I would discuss it with your doctor. If they do not see the harm in it, then go for it. But those are just some things that could happen.