Hi I Started Taken The Contraceptive Pill Mercilon On The

Hi I started taken the contraceptive pill Mercilon on the 16th April 2016 which was the first day of my period. I have taken this for 21days around about the same day everyday. My 1st pack finished on 6th May 2016 and on this day I had unprotected sex and he ejaculated inside of me and again on the 7th May 2016. Therefore 7th May being my first day of my 7 day break. After my 7 day break is over I am due to start my second pack on 14th May 2016. I am considering coming off the pill and not starting my second pack as I don't feel it has settled well with my body. I just wanted to know I am ok and it is safe to come off the pill after my 7day break and not start my second pack. Taken into consideration I had unprotected sex and he ejaculated inside of me on the 1st day of my 7day break. Will I be protected against pregnancy taking into consideration sperm can survive up to 7days within the body?