It this normal or is it just me

I was just wondering I grew up with sucking my tongue and never grew out of the habbit I know it’s a disgusting habbit but knowone told me it was wrong or weird. I just kinda grew out of it although it was hard to stop but I eventually did. I was just wondering does anyone else suffer with this habbit. I looked it up and the internet said it was called thrush or something like that. I only do it when I’m confortable or feel safe. I am scared I will grow back into the habbit again and have my tongue be so big. I am having problems swallowing, gain loads of spit (sorry that’s kinda gross) and find myself constantly drinking it’s due to sucking. Any suggestions on what go do