Getting tubes tied???

Megan
Hello mama's! So I am 19 years old with 2 children 2 years apart. It is an extremely hard job being a teen stay at home mom with two kids that young. I struggle daily. I love kids but am constantly worried about having another. Can't take any regular birth control because of an issues called factor 5 and currently have no insurance so I can't get the only kind of birth control I can take. I have one boy and one girl and I'm just really wondering if I should call it good and get my tubes tied!? I need opinions, experiences, ect from you mama's! I know i might want a baby down the road but it's so risky how many years can I make it pregnancy free without birth control!?