Some times when resting in bed while breathing i feel pain in throat but if i cover my face with blanket the pain is gone..it hapens often.what to do?

Mouth breathing: Might cause inflammation to oral as well as throat tissues . Do you have any nasal obstructions? Like congestion or deviated septum?

Anxiety : Is state of tension, apprehension, worry, uneasiness or fear. It may be related to anticipated danger or arise for no apparent reason. While mild episodes of anxiety are common and do not usually require treatment, more severe forms can be chronic and debilitating. Symptoms of severe anxiety: insomnia, appetite changes, palpitations, and pain. Rec.: see your pcp for evaluation.