My fiance's step sister was raped and got pregnant when she was 13, had another when she was 17, and is now on her 3rd. They told her she had to be 21 to get her tubes tied or have 3 kids. She's getting tied after this baby. She's not a good mom by any means so it's good news for me anyhow. But that's what they told her, they might tell you the same. Try getting an implant they're suppose to last for 5 yrs I think. best wishes Meagan