Getting tubes tied after 3rd baby

Meghan
I'm 20 and pregnant with mine and my husbands 3rd baby and to be honest I don't want anymore for a long time. I want my tubes tied but I have heard most doctors won't consider it unless you are a certain age and at least have so many kids, it's just what I heard so I'm not sure. Would I be able to get them tied? Is there any reason why they wouldn't do it?