I am so sorry that you are going through this at such a young age. There are many different outcomes from a LEEP. It sounds like your dysplasia is mild/moderate and so the LEEP could remove the dysplasia and you could require no further treatment. The LEEP could reveal cervical cancer in which case you could opt for a radical trachelectomy in which your fertility would be perserved or a hysterectomy could be recommended.
There are many women who have a LEEP performed and then go on to conceive and deliver healthy babies.
If after the LEEP, the dysplasia was not completely removed I implore you to seek the opinion of a gynecological/oncologist. They are the experts in this field and treat pre-cancer as well as cancer.
I wish you the best of luck and email me anytime if you hav questions.
Dawn