I've had a normal period for the passed few months. My period was due around the 24-26th and it's still not here. I just started feeling light cramps and twitching in my lower abdomen as if it were going to start, but nothing is happening. I've taken two tests in the passed three days. I don't know what to do. I'm very light headed, no appetite, tired all of the time, so bad I slept three hours passed my time to go in to work. If someone has some info it'd be much appreciated.