Hello, So I Have Missed One Period And I Am

Hello,
So I have missed one period and I am sexually active and also on the birth control pill. 2 days after missing the period last month I took a pregnancy test and it was negative. Saturday I was supposed to start my period again and I still haven't to this day. I took a pregnancy test yesterday and it was negative as well. I take my birth control every morning which ranges from 9-11 every day. Is there still a possibility I could be pregnant? I plan on meeting with my gyno by the end of this week, the day after my period should end..