33 years old, son 4 years, daughter 2 years&4 months. past 15 months on depo provera(3months*5 dose) abnormal spotting since last 3 months, is it ok?

Not an unusual: complaint of patients receiving Depo Provera (it's called "breakthrough bleeding" It is still acting as a contraceptive!!!!! If the spotting is worrisome or even "inconvenient" an adjustment i the dosage of Provera (or withdrawal allowing a full period while using another means of contraception ) could be discussed with your GYN. Hope this helps! Dr Z