so i have just received my custom fitted lower mouthguard to protect my cheeks from irritation and biting which started 20 months ago after a fall I had to the front of my face my cheeks are always sore and painful. i have tried my mouthguard today, and my cheek still getting caught and little bleeding. so i would like to know how long should it take to improve and should it be adjusted. also would like to know if upper mouthguard would help please as i have a slight vocals tics which is causing jaw movement