Me and my girlfriend had a physical encounter and she has not yet got her periods. We have confirmed with other doctors on practo and everyone says there is no chance of pregnancy and no need to even take a test. They say that she will get her periods soon if you wait. Even though there is absolutely no chance of pregnancy, I am always worried and have been unable to get it out of my mind and I am struggling hard to concentrate on any of the other things. I have many tasks to complete right now and deadlines to meet and I'm unable to concentrate. What should I do? How do I make myself and her stress free?