Hi Sonka
Mrs Brown is very kind but I'm really not an expert on migraines, just have far too much experience trying to deal with the wretched things for many years.
Few docs have much experience of dealing with either migraine or HRT so it's no surprise that the combination of both freaks them out. I've seen Profs Anne MacGregor and Peter Goadsby for many years and also Nick Panay. All have extensive specialisms in the treatment of hormonally driven migraine. I can pass on to you what I was told.
Firstly let me address the docs concern about migraine and stroke. This subject is hugely contentious as migraine and it's relationship with stroke, particularly ischaemic stroke, is still not terribly well understood. Theories abound and there are many scary headlines but essentially the studies appear to see an increased risk in women in the age group 35-45 with migraine with or without aura, and this is found to be exacerbated by high blood pressure, smoking and the use of the contraceptive pill. This risk is miniscule, however, as a result of these findings the World Health Organization states that oestrogen-containing contraception is an absolute contraindication in all women who have migraines with aura. Read these links to the The Migraine Trust that better explain both stroke risk and migraine, and the use of the contraceptive pill with migraine.
https://www.migrainetrust.org/about-migraine/migraine-what-is-it/stroke-migraine/https://www.migrainetrust.org/living-with-migraine/coping-managing/contraceptive-pill/That said, it is believed that Migraine aura is not a contraindication to use of HRT. In contrast to anovulatory doses of synthetic oestrogen used for contraception, HRT uses physiological doses of natural oestrogen. The docs used HRT to try to treat my migraine. In particularly migraine/hormonally sensitive women, it is recommended that gel or patches be used instead of tablets. The results are variable and you can't know whether HRT will help your migraine or exacerbate your migraine unless you try. However, I was told that HRT was more likely to be successful for those whose migraine did not worsen in peri or meno. Women with headache worsening during peri/menopause showed a variable response to HRT.
The effect of HRT on migraine is unpredictable. Some studies appear to show that higher doses of oestrogen replacement therapy may be more likely to lead to the development of aura symptoms; lowering the dosage or switching to another type of oestrogen replacement may lead to an abatement of aura symptoms. Personally, any level of dosage triggered aura, including the minute doses in Vagifem but I am extremely sensitive. If an aura appears for the first time after the start of hormone therapy, oestrogen can be reduced and the HRT route of delivery can be changed. Transdermal oestrogen delivery is recommended, as I mentioned earlier.
Sonka, it's impossible to know what has specifically triggered this mig with aura but I was told the best HRT combination for migraineurs with aura is oestrogel and a vaginal progesterone like Utrogestan but the difficulty with this is that many UK GPs don't know about the vaginal application method of Utrogestan.
I'm sorry I'm sitting in a hosp waiting room at the moment typing on my phone (trying to access stored info) so this may be a little jumbled. Why don't you read the The Migraine Trust links and if necessary print them off and take to your docs. Personally I would continue taking your HRT until you can seek advice. But I'm not your doc! Sometimes it takes a number of triggers to trigger a migraine so it may well have not been the HRT alone.
Don't panic, there is much dramatization in the links between migraine and stroke. There is plenty of accessible information on this subject on the net if you wish to research further. I've just found another link from the national Migraine Centre, which used to be COLMC. They offer calm sensible advice! Have a read.
http://www.nationalmigrainecentre.org.uk/migraine-and-headaches/migraine-and-headache-factsheets/migraine-menopause-and-hrt/Hope I've been of some use, do ask if I can help further. I'll be home later this evening with more info accessible on my laptop. Hope you find a solution soon, I wish you well x