How to switch from Evra patches to Vines tablets?

Hello at the beginning I used vibin tablets after periodic examinations it turned out that I have bad liver results mrs. doctor prescribed me evra patches I used them for half a year only that I was allergic to them. The results after the next tests came out good so the doctor prescribed me Vines tablets, but I did not get instructions from the doctor when I brewed them so after peeling off the last patch after the onset of bleeding I took the first tablet, but I'm worried because I did not get a period or I was protected all the time???