Hi Kittydaydream
I have been going through exactly the same thing as yourself recently. I have a post on here regarding being on hrt (patches) for 5 years, then after a 5yr coil replacement in March 24, (having had the coil since 2008) suddenly not absorbing from the patches any longer. Nothing had changed other than the coil. I didn't discover the lack of absorption for about 4 months and feeling dreadful.
I was on Evorel 50, GP informed me that the coil releases more progesterone in the early days of insertion, so thought I needed more estrogen. I stayed on Ev50 and used Lenzetto daily for about 6 months. When I came off that, I just plummeted, all symptoms back, estrogen levels extremely low (45). GP thought it could be a bad batch of Evorel which she had experienced with other patients, so I went onto Estradot 50, still not feeling any better, so tried Estradot 75, still not absorbing from them either. So I'm now on the gel 3 pumps a day. I still don't think it's working, not due another review for a couple of weeks, but have another blood test booked on 27th to test estrogen and testosterone levels. I think GP will suggest tablet next and even though I don't really want the tablet, I am desperate to get my life back again. The patches were just so easy.
So I would ask for a blood test to check estrogen and testosterone levels. Perhaps you are not absorbing from the patches either. Worth checking. As I suspect that the coil should definitely have settled down by now. Reading other posts on here, my iron levels are also not great, so I have started to take an iron supplement, might be worth having that checked out too.
Hope you get to the bottom of it and discover what is going on, it's not great being in limbo like this. Very best wishes.