Hi Mindfulmoomins
The effect of progesterone (Utrogestan) withdrawal for some women can give awful and I mean hideous PMT symptoms, as you have experienced. After about day 5/6 of stopping the Utro and when/if the bleed starts, you should feel much better as it would have left your system by then.
The Utro negates the good effects of the estrogen and in your case as you may not have much of a build-up of estrogen yet, your level may have been depleted further. Progesterone can affect/deplete serotonin levels.
Finding the right balance of estrogen is trial and error, too high or too low can create anxiety for those particularly susceptible to hormone fluctuations (personally I have always fared better on lower).
Hopefully over the next 2 - 3 months as your estrogen levels increase/stabilise, you'll start to feel better and the next use of Utro and withdrawal will be more bearable.
Maybe you could try taking Magnesium Citrate supplements in the evening - it has a calming effect.
Wishing you well, hope you find your individual balance - we're all so different in how our bodies react.