Very swollen lip due to gentle biting wile studying. Sleep deprived, stressed and my lip is HUGE. Should I be worried? No allergy it's just due2trauma

Sounds like it. but you should also ask your dentist to check for mal-occulsion causing you to bite your lip. If stress is the major issue, then methods to reduce stress would be the solution. Repetitive trauma to any tissue can lead to scarring and even cancerous changes over time.