I have it too!!!! I thought it might be something to do with the amount of flying I have done in the past week (round the world and up and down!!) because you bloat in the air. I got back yesterday and despite glugging down 8L of water during the flight I still look pregnant. The pill link is interesting... I quit the pill in December and haven't had a period since.

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Probably candida. I would check out 811, it's helped me lots.