Oh goodness, how exciting/ scary for you Tranquility. You know, there are oodles of stories on here about how women started their pregnancy with AF and then went on to have a healthy baby.
(God, all this talk is freaking me out- yes I've had weird symptoms this month, but I tested and was BFN. I drank a LOT of wine last week. I am NOT mysteriously pregnant).
I kind of spiked DP with my urine when I tested 
. I decided to do a test in the middle of the night, accidentally did a wee without thinking about it whilst I was sitting on the loo pondering the test, then woke up again a couple of hours later with just enough wee to give it another go.
So, I decided to wee into something, but my foggy 5am brain couldn't find anything except my (appropriately yellow) coffee cup. "Fine", I thought, "that's MY coffee cup. No one else uses it". So I did, tested BFN, gave the cup a v. quick rinse, and left it sitting on the side.
Now, DP angelically gets up with DS (who is not his DS) nearly every weekend morning, allowing me to have a lie in, and then brings me a coffee about 10-ish- in my yellow cup. Later that day, I told him what had happened and said "Ha ha, it's just as well nobody else uses that cup eh?!"........Cue a certain pause, before he said...."But I do! Every morning before I bring you your coffee I make one and drink it from your cup to save washing up".
Never has there been such savage karmic retribution for using WHAT IS CLEARLY SOMEONE ELSE'S MUG. 