Could i be pregnant?

Hi! I was on the mini pill for four months! Stopped taking it around the start of this month and havent got a period yet. I got this dark brown/clotty discharge for about two days about a couple of weeks ago. I seen a doctor on the 5th Jan and they said i wasnt pregnant and i done a test myself and it was negative. Im just wondering when im going to get my period or could them two tests be wrong and im pregnant? The last period i got was in october/november time because i dont get periods apart from that one on the mini pill. And the last time i had intercourse was about the second week of december!