Dear All,
thanks so much for all your useful thoughts and for voicing further concerns. A couple of things to consider: headaches from thrombotic syndrome are absolutely piercing and localised. I, too, have suffered headaches at the beginning of HRT and on and off since but nothing near that.
On the second dose with AZ, I, too, heard that side effects should be minor (this read in the Guardian, not info from my cousin!). And my mum in Italy was told that the second dose of Pfizer would give more side effects: in fact, she had none both with the first and second dose - same for my Aunt and Uncle, all young boy and girls in their 80s!
As I said, I am reassured that my cousin told me not to worry about any possible relationship between AZ and artificial hormones, but I am all ears to any future knowledge on the matter since she made it clear we do not really understand yet, incontrovertibly, the cause and effect between AZ and thrombotic syndromes.