Firstly, there is nothing wrong with an estrogen level at 890pmol, if you felt good at that dose. Personally, I need my estrogen to be around 850 - and if it goes any lower, I get symptoms back. Please don't feel anxious about estrogen. If you need that dose and if you have adequate endometrial protection with progesterone, you shouldn't worry.
Secondly, if you are going to take HRT in post-menopause, you have a choice. The choice is either:
1) to take a tiny dose of estrogen which keeps your symptoms mainly away - but may not be sufficient for health and longevity because it's far less than what your body is used to, when you were younger. If you do this, you probably won't bleed much if at all - because you are simply not taking enough estrogen to cause any build up in the uterus. But since you are not taking enough for growth and proliferation of the uterus, you are likely also not taking enough for your brain, your heart, your bones, and on a cellular level. Because the effects which estrogen has (increasing cell turnover, mitochondrial action, growth proliferation) are not going to act on all those other parts of you without also acting on your uterus.... (If you want more info on that way of thinking, look up Dr Felice Gersh on YouTube and specifically her 'estrogen dosing' video there.)
Or:
2) to take a decent amount of estrogen to get your serum levels up to around 600-900pmol, which is far more likely to have beneficial health effects and improve longevity - but which IS GOING TO CAUSE A BLEED. Because those growth proliferative effects are going to act on the uterus too. Since you ARE going to bleed, you can either 1) bleed randomly, all over the place, without much pattern to it, by trying to take progesterone continuously or 2) you can schedule when the bleed happens by taking progesterone for days 15-26 of your cycle and then stopping to 'force' a bleed. Then everything which has built up that month will come out at once, meaning you don't bleed unpredictably at other times, you don't bleed during holidays (unpredictably) and you don't get referred for investigations because the bleed is happening in response to the progesterone withdrawal and not at other times.
The fantasy which has been sold to so many women is that they won't bleed at all, post-menopause, on HRT, if they take utrogestan continuously. This is only true if you take tiny amounts of estrogen which may well not be the best option, health-wise. (When it comes to bones, for sure we know that the beneficial effect is dose-dependent.)
Furthermore, taking oral HRT isn't a good idea unless you can't take transdermal and have tried that first. I can't see any reason you can't take transdermal so really it seems like your doctors don't know what they're doing with you....
When you 'stopped the light monthly bleed... but felt swollen', I'm guessing you were on continuous utrogestan? So everything was just building up in there and not coming out...
If I were you, I'd use at least a 75 patch and 300mg utrogestan on days 15-26. (You can do that if you are not taking it earlier in the month, you'll have enough.) Then you will stop the utrogestan and some days later, that will trigger a bleed (day 1 of your next cycle). And so on....