For the past 3 days I have been unusually fatigued. I also have had an upset stomach, pains, bit of nausea and generally uncomfortable. The fatigue is whats worrying me, I slept from 10:15 to 7am and could barely get out of bed. last night I had that sore skin feeling. It doesn't feel like I'm coming down with a cold, I have never had fatigue like this (apart from when dd was born )
Will go to the GP next week if it keeps up, but in the meantime has anyone got any ideas as to what it could be? Or experienced similar?

ETA: I am not pregnant