One blood test is not sufficient to tell you very much and it also depends on where in your cycle it was taken. If you are not having a cycle then I'm not sure - I agree with Dancinggirl, Sarai - although your FSH level is high, your oestrogen levels are also pretty good still especially if you haven't had a period for 3 months!
It sounds, as Taz and Annie said that your ovaries are beginning to pack up which is why your FSH levels are high and the high oestrogen levels show that maybe there is an egg growing in there and you may ovulate soon (I'm not completely clear as to exactly how this works) - I try to imagine the ovary like a bowl of thick porridge on a rolling boil so you get some bubbles that don't pop ( the eggs that don't develop properly) and then some ripen properly and go pop ( like the porridge boiling). I am thinking that the ones that don't pop are still producing oestrogen as they start to develop and then if they don't then are reabsorbed and oestrogen production stops. This is probably a terrible analogy but it is how I try to understand it! It might be complete rubbish as I haven't read much about this aspect in detail as you can probably tell!!!!
The paper I linked to a while back about the stages of reproductive ageing reported that during peri-menopause FSH levels can go into the post-menopausal range (as Taz!) so I presume if GPs aren't aware of this they will just look at one blood test and draw (the wrong) conclusions - telling women they are post-menopausal and sending them into an unnecessary panic!
The low progesterone indicates that you are not ovulating at the moment or haven't done so recently - progesterone is naturally very low during the first half of the menstrual cycle and during post-menopause ie it rises quickly after ovulation and then drops fairly quickly if the egg is not fertilised.
Sarai if you want to read about what the two hormones do there's a great article here about peri-menopause where it is explained quite well:
http://www.menopausematters.co.uk/article-perils-of-the-perimenopause.phpYes best to wait and see...
Hurdity x