When should I use birth control pills if I can't bring them to my baccalaureate?

Yesterday I was given a squeal of hours to enter the school building because of the baccalaureate during the pandemic. Baccalaureates start at 9, and we enter the building at 8:15 and 8:15 already in the exam room. Of course, I leave the bag to the car as well as the rest of my belongings, with which I will not go into the room. Vines tablets are taken at 10:30 and unfortunately they did not recognize them so That I could "bring" them with me, because nothing threatens my health and I do not see the problem, so that I take later. Whether three days in a row I have to take the table about 7:50 (2h 40min earlier) or later at 12 (1.5h later). Won't this temporary confusion affect performance? If I should take earlier it will not reduce my effectiveness when I have to take it at a "fixed time" or 10:30? The time of taking will be greater nothing 24h from the previous one. The following week I am already writing an extension and here I also have a question- one time to accept at 7:50 or 12 so that it does not reduce the effectiveness?