What are the signs of pregnancy, before a missed period?

Since you had a positive Ovulation Predictor test, I would imagine that *IF* you are going to start your period, it would be 14 days post appointment. So, I would wait about a week and then take a test. The symptoms that you are experiencing can go either way. They can be a sign of pregnancy or a sign of impending AF. (Active Flow). I wish you the best of luck!