Hi Jane
44 is an extremely low (post meno) reading for oestrogen. Your FSH levels must be through the roof - no wonder you're flushing so much and are feeling so anxious! You poor thing!
Are you going to try a sequi regime when you restart? Because you need some oestrogen, and it might be wise to start off as sequi, so the oestrogen can begin controlling the flushing and anxiety.
I wouldn't be looking for the testosterone just yet - it's important to get the oestrogen level up to optimal first, and have had a good three months on both oestrogen and progesterone to see if it will settle, and look at adding testosterone if it's necessary after that. And remember to take the Utrogestan at night, as it can be quite sedating.
Now for the endo. You say it ‘might' be endo, but were unable to have it checked out at the time. Please go and get yourself thoroughly checked - scans, cameras, whatever it takes, to either confirm or rule it out...you don't need that worry on your mind. How were your periods before? I believe hrt actually can help some of these types of conditions as the progesterone part keeps the lining quite thin, but that would need to be checked by your gynae.
And mirtazapine is brilliant isn't it? I take a tiny dose (7.5mg) to get me to sleep at night - and it knocks me right out!!
Anyway, good luck with everything xx