Hi everybody. I'm new here and wanted to post my experience of these perplexing internal vibrations. Mine started 10 weeks ago along with other symptoms (vertigo, sore chest) which seemed to imply that my HRT patches were no longer helping me. Been 4 weeks on estrogel and progesterone combo now and still having the blasted tremors every night upon the exact moment of falling asleep. Last night was awake the entire night with no sleep. I sometimes get little spikes of electric shock feeling darting up from my abdomen just before the tremors happen. The tremor itself is an abdominal one and always wakes me right up just as I fall asleep. Because I reckon that much of this is due to an imbalance between the parasympathetic and sympathetic nervous system - like I'm stuck in fight-or-flight the whole time - I've decided to try acupuncture and see if that can balance things out again. I should add that I also had Covid 16 weeks ago, not badly, but of course like many of you on here I'm wondering if there's a connection.