... January and swaped to to trinessa the last few days of February , I had intercourse a few days before I changed from beyaz to trinessa and had my period the next month. Could I be pregnant? Also since using trinessa I seem bloated and crampy a week before I start but I'm starting my period between 14-21 days into my cycle, this is only my second month using trinessa, so is it just the bc pills or is something wrong?