Donna-paul - if you are seeing Mr Warren in Norwich - do go back to see him, I think follow up appointments are £180 - you can call or email his lovely secretary to find out.
You are obviously getting headaches wither withdrawal fo the progesterone and this is quite common. Are these headaches just for a day or so? Are you still getting them even without the HRT? You may be better with a Mirena, which give less systemic absorbtion and stops the fluctuations of the sequi HRt.
Quote about Mirena from this site:
Progestogenic absorption throughout the body is minimal so reducing progestogenic side effects. The effect of Mirena on the womb lining can significantly reduce bleeding and when used as part of an HRT regimen, in time, 30 to 60% of women have no bleeding at all. Although Mirena used for contraception is licensed for 5 years, the license for use for the progestogen part of HRT is currently 4 years.
Have you been diagnosed as suffering from migraines or are these more general headaches? I got headaches when I tried the more modern BCPs after having my first baby - the older BCPs had suited me fine. I also found I got a lot of headaches in the peri meno stage.
Keep a diary of when your get headaches - eat small meals regularly, reduce sugar as much as possible. Drink plenty of water but avoid caffeine, fruit juices and alcohol.
Personally I would try the sequi version of Oestrogel with Utrogestan - so start really low with one pump of Oestrogel each day for 3 weeks and then do 12 days of Utrogestan. Mr Warren explained that taking progesterone for at least 10 days each month was very important, so, unless you can afford to have regular scans, using Utro for fewer days may cause problematic bleeding (as happened too me).
The alternative is to try an SRRI but, if you are under 50, then this is not the best option for you and SRRIs are not without side effects. DG x