Ok so I have been on the birth control patch for about a year two weeks ago on my fourth week I took of my patch and had a normal period. I have been off the patch for about 3 weeks now because me and my partner want baby number 2. Yesterday I should have been ovulating and we had unprotected sex. If I was to get pregant last night since I just got of the patch 2 weeks ago will it cause birth defects or harm myself n the baby ?