What Does Recurring Spotting And Soreness Of Breasts After Stopping Depo Injections Indicate?

Hi, ive been on the depo shot for 3yrs..Im 21yrs old now..I recently qot off of it as of October, which was when my next shot was due..Since then ive been spottinq every two weeks for like 3-5 days and my breast have become really sore and biqqer..Saturday my period came but idk if thats just the spottinq aqain or what..Im tryinq to conceive but not sure when i will be able to.