Sometimes i feel like i can't swallow my spit or food? or when i'm at the dentist i feel like i need to sit up and swallow ? anxiety? or sumthing more

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. See your PCP for evaluation and referral. Do not self medicate to ovoid serious complications.

Probably.: Anxiety can cause dryness of the mouth , a feeling like you can spit , swallow food or take a deep breath. Certainly, going to the dentist can be a frightening experience and can precipitate anxiety. When you feel this way, it will help to let your dentist know and he can reassure you and give you a chance to wet your mouth or gargle to alleviate the dryness. He can also prescribe a treatment .

Sounds rght: I think you are listening to your body in a good way. Mild anxiety symptoms are quite consistent with your symptoms. Reassure yourself and if this does not work then seek professional help. Best of Luck!