Nas, a few things...
If you are around 400-300pmol of estrogen, you could well need more estrogen. You could try adding in one pump of gel if you have it, or you could cut a quarter of a 75 patch to add on - as long as you always measure the same amount (in mm) it will be a consistent amount.
I think it's good you've added the testosterone, that isn't going to interfere with the estrogen-progesterone thing and it could well help - but it is a slow burner as it can take 1-6 months to see any difference, it's not immediate.
Progesterone: I think you are misunderstanding things. The coil does not contain progesterone. It contains a synthetic progesTIN. Which doesn't function in the same way as body identical progesterone - the only way it imitates body identical progesterone is that both thin the uterus lining. In every other way, it functions very differently. If you want more information on that, get a copy of Lara Briden's Hormone Repair Manual. She briefly addresses it here:
https://www.larabriden.com/the-crucial-difference-between-progesterone-and-progestins/ You can also check out her podcast where she has an episode on the difference.
You're not getting any progesterone from the coil. Besides which, the coil is designed to deliver progestin locally to the uterus and the amount which reaches the blood stream is very very low. So - you may well not have enough progesterone.
If you want to see if progesterone is causing your problems, you would need to use utrogestan/body identical progesterone. You can use this along with the coil, although you may find that some GPs resist because they don't understand that progesterone does much more than just thin the uterus lining and if you have a coil in, they might just think you are covered for that. But if you want to explain that you want to try adding it in to see if it helps with mood, you could do that. I think you've taken it before, did it improve or worsen your mood then?
If your previous problems with HRT have been ongoing problematic bleeding, I really wouldn't recommend removing the coil. Because you will just get that back again and it could make it difficult for you to take any HRT at all. Instead, you could add in utrogestan as well as the coil, see if the testosterone helps at all, and try increasing estrogen. Maybe don't do all that at once, as you won't know what is doing what
I'd suggest doing all that before considering removing the coil, especially before 6 months on it.
