I came off the pill 7 weeks ago and still no period (lots of symptoms) have tested with some very cheap ebay tests and all have been negative. I was due to get my flu jab today so decided I would get a clear blue test to make sure. I bought a twin pack and BOTH didn't work. I didn't get a control line in either of them (until a few hours later when there was a faint line in control window and a very faint positive but I know you are not supposed to read after that long ) Has anyone else had this experience and does anyone know what tests seem to be the most reliable?? They wouldn't give me my flu jab by the way, just in case!