So I have been on the ortho evra patch for almost 4 years now. I absolutely love it. Well a few months ago I changed my patch day and it seems like my period has changed. I used to have my period for about 3 days. Now, my patch day is Thursday.. and I usually get my period on Saturday or Sunday and it lasts till Thursday. I know every woman is different.. but I am just curious to know how long does your menstrual cycle last. This is is really making me consider changing bc.