So I took my first inactive pill today and I've been taking trinessa for about 1 year and 5 months. Had sex last week Sunday and I'm sure some of my bfs sermen was left inside of me. But I took two weeks of the active pills before I had unprotected sex n Sunday the 24th was the first day I took week 3 of the active pill, then had sex later that night. I continued to take my pills as I normally do. I'm having lower back aches. Could I still b pregnant??