@pash86, you're so right. Dr. Google can be really helpful and harmful. Please don't jump to any conclusions until you've consulted with a medical professional. And you've done exactly the right thing and requested an appointment with a neurologist. Good for you.

Now how do you stay calm between now and your appointment? Let's look at the facts.
"People often worry that fasciculations are related to a serious neuromuscular condition like ALS. It’s worth noting that fasciculations aren’t the only symptoms of ALS. In benign fasciculation syndrome, fasciculations are the main symptoms. In ALS, fasciculations are also accompanied by other problems such as worsening weakness, trouble gripping small objects, and difficulty walking, talking, or swallowing."
Here's more information about What Is Benign Fasciculation Syndrome? https://www.healthline.com/health/benign-fasciculation-syndrome#symptoms

You mentioned that you had tongue fasciculations about 2 or 3 years ago and were told by doctors it was probably due to stress. Have you had an increase of stress in your life in recent times?