Unusual bleeding on.depo shot

Patient: I’ve been on thr depo shot for about 6 months now, after the first month my period stopped. Today when I went to the restroom there was a small clot on the toilet paper, and the next time I went there was some light blood. Is this normal or something I should have checked? I know abnormal periods are normal, its just worrying me since I haven’t had a period at all in 5 months. Could i be pregnant? Could it be a miscarriage?

Symptoms: Blood clot and light bleeding.

Doctor: