I have been on the birth control patch Ortha Evra for 2 or 3 months now. It was time for me to take my patch off Sunday, so I did. It is now Tuesday and I still haven't started. I have been using the patch as instructed, but the past week I have been very stressed. I have been told that stress can cause your period to be late and I have also been told that while on the patch it is possible to have irregular or no period. I have had some light spotting. I am very worried because I have a 3 month old. Could I be pregnant?