I was taking Ortho Evra for about a year. When i stopped taking them because me and my husband were trying to get pregnant. In April i quit taking them. So the first month of not taking them i had my period, in MAy i had my period. June i had my period. Then July no period, but August i had my period. September no period. Now i am due for my period and its October, a little over due by about 5 days now compared to the period i had in August. I went to the clinic and got a blood pregnancy test and it was negative. I am not stressed and nothing big has changed in my life. The doc also did a thyroid test, and that was neg. also. Should i be worried?