AF not due until tomorrow but I don't feel remotely like it's on its way. Usually turn into a psycho just before AF & I feel relatively calm at the moment in spite of having a very stressful day. Had sex this morning which normally brings on AF if it's due & still nothing doing. However did have an upset stomach early on in the week & wonder if that could have upset my cycle slightly. Any positive thoughts appreciated. I WILL NOT TEST UNTIL AT LEAST WEDNESDAY. Shouting at myself btw.