Can you get pregnant when switching pills?


Hey ya’ll-

My pharmacy had to switch me from my usual Sprintec to a FDA approved generic equivalent called Mono-Linyah due to a lack of stock on Sprintec. I’m really confused in regards to how this works because my pharmacist only really said that “it’s the same pill” in a fancy way. I finished up my last pack of Sprintec last night and didn’t miss a pill, as per usual. I’m about to start the new pack of Mono-Linyah tonight, but I’m just kind of confused- what are the chances that I can get pregnant if I were to have unprotected sex in the next couple of days? Should I use back up at all?