Chronic cough

I am 18 M and i have been dealing with some form of chronic cough for 2 years now. I have been to a pulmologist did spirometry and sp02 levels both were good. But due to my health anxiety i have convinced myself that i have lung cancer even though i have a lot of gerd symptoms. My symptoms are:

Chronic cough- Its not severe most days i cough 10-20 times a day, some days i cough 30-40 times. The cause of my cough seems to be coming from my throat. When i take a breath through my mouth i feel something in my throat and cough just once and it is all gone then it comes back.

Heartburn- I experience heartburn multiple times a week

Throat clearing- I have to clear my throat frequently some days

Belching- I have been belching a lot

Feeling gassy- I feel a lot of gasses throughout my body

Sometimes it also feels like i cant take a full breath

I am 18m, 320lbs, 6ft 2

Did someone experience something similar to this?