[bryony]

Bryony,
When I read your original post, I thought, " Hmm, another way the effects on me seem to be different to almost everyone else", but didnt say anything.
Yesterday evening, lying in the bath, I thought about it and had a look...lo and behold, a 1/2" wide dark line that I'm absolutely sure didn't used to be there!!

What the significance of it is, I have absolutely no idea.

Well, that's a relief at least. I'm guessing it is caused by hormone fluctuations, rather like the thin brown line that pregnant women get from navel to groin when pregnant. Maybe women would have that pigmentation if they were joined like we are?

So that's three of us with it, and therefore I'm not going to worry about it any more!

B.x