I can understand your concern.
A hard brush could be one cause of it, change your brush to soft.
Gum bleeding can also be a sign of vitamin C deficiency.
Take citrus fruits daily. A glass of lemonade daily will also be of help.
Tab. Limcee go be chewed once a day for a month.
For further evaluation consult a dentist in person so that other causes can be eliminated.
Unless we see it and examine it, we won't be able to come to a exact diagnosis.
I hope you understand .
Dr. Anil Kumar Jain.