My front teeth is experiencing sensitivity whether it is cold or hot food or even a cough drop. of course i googled it and it said something about a gum disease or even a root canal it just started happening what does this mean?

What this means is you have a serious dental problem that needs to be examined by a dentist not google. If you don't want to lose any teeth see your dentist now.

It means you need to be evaluated by a local dentist to have your issues diagnosed and treated.

It means there may be damage to the tooth and/or the surrounding supporting tissues. Please don't wait for it to self-heal. It probably won't. See your Dentist for evaluation and appropriate treatment.