Dear Lybrate user, there is nothing to be afraid of. You've been brave enough to leave the habit, now you have to take care of your oral health. The symptoms that you're experiencing point toward a condition encountered often by tobacco chewers. Apart from the burning sensation while consuming hot or spicy food, it also affects your mouth opening. The inside of cheeks becomes hardened and leathery. But it is curable if treatment is initiated well in time. There are creams, ointments, vitamin supplements as well as injections available for the treatment. You have to visit your local dentist
for the same. Modify your diet
, consume more fluids, salads, fruits and vegetables. You may take vitamin C supplements but it is very important to start the treatment or the condition would worsen.