Hello I am 5/6 days away from my period being due but have started feeling strangely since Thursday. I had a tiny bit of dark discharge on Thursday. Since then I have had some cramping. I have been feeling really tired, nauseous although I still want to eat. I seem to be producing a lot more saliva than usually and my mouth feels funny. I've also had a headache. I seem to be drinking a lot more than usually and going to the toilet more than usual too as well. I just wondered if anyone has had these symptoms? I'm starting to wonder if I am...