Hi Annie0710
I agree with Dancinggirl that that level of oestrogen is high to experience all the time.
This is the reference range:
http://www.gpnotebook.co.uk/simplepage.cfm?ID=570818627The upper end of the range would be not dropping below 500 throuhgout the cycle, which is quite high. Many women would only expect to reach this level near and during the spike which occurs just before ovulation. The condition dazned was referring to is tachypylaxis (and should not apply to levels of 700 pmol/l) and can happen when women have implants and experience oestrogen levels at what is known as "Supra-physiological " levels ie higher than would occur naturally during menstrual cycle in our bodies.
My initial thoughts on your migraine after starting a patch - because it started so soon after starting the patch - was that it could have been due to the sudden drop in oestrogen rather than too much. It takes 12 hours for the oestrogen level to reach a maximum after applying a patch whereas I believe ( haven't checked this) the spike in oestrogen from taking a tablet occurs sooner than this. Therefore your body was "expecting" more oestrogen but didn't get it straight away.
If you have experienced migraines before you will know that once one has been set off, whatever the trigger, it will run its course even if whatever caused it is no longer there - so maybe the 4 days migraine was due to the initial drop in oestrogen.
You didn't mention the dose of patch either - personally a transdermal method should give you a more consistent dose and depending on your age it might be worth trying again. The metabolic byproducts and their excretion from tablet HRT will surely also have an impact and especially at high doses. Changing from one to the other will certainly have an impact but this should settle. If oestrogen itself caused a migraine you would get one on tablet HRT and for migraine sufferers transdermal HRT is recommended. This supports my theory that it was the sudden change in oestrogen caused by the changing delivery method that caused your migraine.
However I agree they could do with coming down a little perhaps - depending on your age?
Oestrogen will not give you crashing fatigue and levels that high should mean you still have a reasonable libido though as Dancinggirl says testosterone is involved too.
I would definitely ask for other tests eg thyroid as suggested and preferably testosterone as well although this isn't generally available on NHS. Perhpas if you have had ovaries removed you may be able to ask for this test?
Kathleen - I can't remember if you are post-menopausal but 50 mcg is definitley not too high a dose. if you are post-meno this should be the level at which your main symptomns are controlled and you feel well, but not elated! It is also the minimum patch dose licensed for prevention of osteoporosis (although some protection is given even at small doses).
Sorry if this is a bit garbled - thinking aloud!
Hurdity x