My Friggin Freckles

I`ve just started to get pissed off about my freckles because I didn`t have any freckles when I was younger. But I want to get rid of them now. I heard that lemon juice works well and since I`m only 13 I don`t want to spend like 70 bucks on some cream or whatever. Does any1 have ne suggestions for cheaper things, like things under 30 dollars. And also if I started getting freckles in 5th grade does ne1 know if they will go away naturally by like 20. PleAZ hElP mE!!