Hi Friendlygal, there is another thread named "Anyone got FemSeven conti yet" which has some info on.
I got mine on prescription from my GP ..local chemist tried but couldn't get any for about a month, so I eventually e-mailed the chemist's head office who were brilliant and managed to put an order through for me, but was told there are still some supply issues.
So good luck getting hold of them, I got 3 packs of 4.