I bite the inside of my mouth so bad i can't stop even when it bleeds.my mouth sometimes hurts and is swollen. can it be anixety or a health concern?

Mouth biting: It sounds like moderate-severe anxiety. Please make sure you have a therapist to discuss your stressors with (good and bad!) your doctor can help you as well, sometimes with short or long term anti-anxiety medicines which really can help. Obviously, there are other health conditions that cn cause these symptoms, so make sure you get a complete evaluation by your doctor.

2 places to start: Start with both your General Physician and your General Dentist. Your Physian can begin your anxiety management treatment, possibly with referral to a mental health professional. Your Dentist can asses and treat the damage done to your tissues and make a shield to help prevent you from doing more damage.