Hello
Reasons for these symptoms could be multiple.
Proper assistance can be give only after thorough clinical examination.
However symptoms are suggestive of reinfection. Could be due to RCT failure, faulty crown or even a sinus tract opening.
Bleeding gums is mostly due to gingivitis
Next Steps
visit a nearby dentist asap
Health Tips
donot delay. Luke warm salt water gaurgle 3-5 times will help relieve pain.