Birth control

So ive been on sprintec for a year now and have run out. Due to being married, and on my husbands insurance i have to see a Tricare provider in order for them to cover it. The soonest they could get me in is May 10th. Im technically supposed to start a new pack this sunday. So my question is when i see him on May 10th, and get more BC, am i supposed to wait to start it until my cycle starts next month again? Or should i take it right away?