Hi chatty gal,
Your story sounds like mine, I had mirena fitted in December and started with one pump of oestrogel, I did feel lots better, but still had hit sweats at night, but mostly first thing in the morning.
I persevered for five weeks on one pump, then saw my GP for a check, and she agreed I should try two pumps, so I've been applying two pumps daily since last week, no more night sweats, and spotting is reduced, I understand it's considered safe to go up to 4 pumps daily. I think oestrogel provides 1.5 mg oestrogen (2pumps)
My only issue is I'm feeling a bit snappy, and low mood for the past few days, I'm hoping I'm not starting to react to the progestogen in the coil, still early days though.
Hope this helps X