I've had tingling in my left leg, arm, and left side of my face for almost a year now. I've had an MRI, CT scan, bloodwork, etc. My neurologist says I have white matter lesions - but they're consistent with migraine syndrome and not sinister. My rheumatologist said it's nothing. My ENT said it's nothing. My GP said it's nothing. My neurologist finally said "Is this something you can live with?" and I said... sure... as long as I know it's not gonna kill me lol - but apparently, from all my docs, this is actually common (don't let the internet scare you) and more likely caused by vitamin deficiencies or pinched nerves or even anxiety (no kidding) than anything sinister. Do not google. I did. I ended up down a huge rabbit hole - even my GP was convinced I had MS due to symptoms that I swear I had (...I'd read about them and suddenly they appeared), but once the neuro saw me, within 5 minutes he said "absolutely not." The scans further proved it. And the neuro said MS is much more rare than the internet will have you believe.
Stop googling. Seriously. I'm speaking from experience - it cost me work days, mental health days, and left me sobbing in an emergency room looking for answers that just weren't there. You will be okay.