Deprovera

Hi,
I`ve been on deprovera for 5 years now - I have to say that I have never noticed ANY side effects - I`ve never had a weight problem and I still don`t.
There are only 2 possible issues I have with it - I have almost completey lost my sex drive, (when I was in a long term relationship and now single) I can`t assume that this is a direct result - but I know depo is admisisterd to sex offenders (male) for this pupose. The second is my boobs have become old quickly, there`s no other way to descibe them - I`m not blaming depo but I`m not looking forward to going off it, in order to get my hormones right. I never bled once in 5 years and because personally I`m not sure that I even want children ever - it`s ok for me, but I can`t imagine it`s completely healthy, we have periods for a reason- it`s natural.
Maybe there all just signs of aging for me but I`m only 27 next month (I do smoke tho)