Dear Inspireandembrace: It is "normal" for one to not have any bleeding when on DepoProvera. This is caused the high doses of synthetic progesterone keeping the lining of the uterus so thinned out that there is nothing much to shed. Usually, when one stops Depo use, the linning will slowly regrow and cycles will return. It is reasonable to start a birth conrol pill immediately after Depo. There is both estrogen (causes the lining to grow) and progesterone (keeps the lining thin) in most birth control pills. So one would hope and expect that one would have regular "Pill periods".
In your case it sounds as though, in the two months of Pill use, that you may have had some late or missed pills---hope I am tracking you correctly. If this is the case you have had the misfortune to experience a bad case of breakthrough bleeding (BTB). BTB can arise if a pill is late or missed. Most distantly, BTB can come from a new chlamydia or gonorrhea infection. Given that you have had a "full blown" period for three months (and are no longer using hormones), it might be time to consider a brief course of hormones to try and get the BTB to stop. Of note in your case, you may still have some residual metabolites of the Depo still lingering. You might ask your GYN about trying some estrogen followed by 7-10 days of progesterone pills. An alternative would be to restart birth control pills. They can advise you the best route.
My best GUESS is that you had low grade squamous intraepithelial lesion (also known as low grade SIL or CIN 1). This is considered to be the lowest grade of abnormal cell (ie less likley to progress to something more worrisome). Your GYN may advise you to have a repeat PAP, or an HPV (genital wart virus) test, or even a colposcopy---depending upon your past PAP smear history.
Bottom line, it would be very unlikely that the continued BTB was caused by the low grade SIL. Hopefully both of them will resolve without needing further treatment. Yet it is important to go back to yor GYN for any recommended follow up--or if the BTB persists.
Yours,
Jane