Ah sis, yan talaga ang importante, kailangan mo talagang makonsulta ng OB mo about this, ha? Bawat brand at type ng injectable may different guidelines, at need mo ng personalized advice based sa situation mo. A few of my mum friends nag-ask din ng same thing dati, at talagang sabi ng doctors nila na importanteng i-follow ang schedule para sure ang protection. Hindi safe mag-assume, especially pagdating sa contraception. Better safe than sorry, diba? Go ahead and message or call your OB para sa peace of mind mo, they'll give you the exact answer you need.