Nothing can be said without clinical examination and x rays.
Since you are bp and
sugar patient, you should take extra care. Dental infections are more harmful for you and spread rapidly.
To treat the pain we need to treat the cause of pain which can be deep cavity, failed RCT, wisdom tooth, trauma, fracture etc etc.
Next Steps
Visit dentist for understanding the cause of pain followed by treatment.
Health Tips
Do not try any home remedies.