Gums hurt when brushed?

my gums(right above canine tooth) are sensitive/hurting; but it doesnt hurt that much. it only hurts when i brush on it, but when i brush on it for a long time...the pain goes away but comes back the next day. its not swollen/red and doesnt bleed and looks like the other side of the gums
so im not sure if i have gingivitis....if i do how should i treat it at home?
i also have braces about 3 months now if that matters
plz dont tell me to go to the dentist