I've been on a starter dose of Levo for 6 weeks (25mcg), so presumably it's starting to kick in now. I've noticed some improvements - brain fog lifted, less tired, no more weight gain. However, I've noticed that by the evenings I'm getting that feeling you get when you're stressed or nervous - sort of faster heart, slightly buzzing. I'm finding I can't fall asleep because of it. Is this just my body adjusting to the new meds, or should I be querying it with my Dr (she told me to go back for blood tests after 3 months, so not due 'til early Jan).