Urgently Need Your Help To Put My Mind At Ease

Patient: Hi my name is Joshan i was on the 3 months injection for a while now however this year i was always about 1 week oh 2 weeks late and in September i was 3 weeks late to get get my injection i got my period on the 15 of September and it ended on the 19th of September was not very heavy bleeding and on the 26th of septemeber i had unprotected sex and today the 29th i see i got my period again for this month.can i be pregnant . i was on the 3 months injection for 3 years 4 months now

Symptoms: Period two a month

Doctor: