Tri-Sprintec Question

Amy
Hey everyone!! So I've been taking the BC Tri-Sprintec for over a year now. I usually skip taking the white last week of pills since they are only reminder sugar pills & wait until the next Sunday to start a new pack... So I go a week without taking anything (I'm on my period durimg this week also). I was wondering if it's okay to skip them & to have unprotected sex during this time???