Over the last year or so I have often felt a weird buzzing/vibrating feeling in chest and sometime neck and tongue when trying to fall asleep. It is not heart flutters/palpitations, it feels different.

I am on vortioxetine so i'm unsure if it's to do with that or anxiety. I have been on the vortioxetine for 2 years and only had the buzzing for about a year, so I would lean towards it not being the drug. I have also been on other SSRIs for over 20 years and never experienced this before.