Hi there. i have this issue too! My gums are kinda bleeding after i brush my teeth. Well to be honest, i never really floss (i mean really!) but i do brush my teeth often 3x a day, and take a mouthwash afterwards. And also it's been a long time since the last time i visit the dentist!! I mean i really never go to dentist ever since i hit the age of 15 i guess.
So right now i slowly brush my teeth so that it won't bleed that much. Its kinda stingy when i brush too hard so probably my gums were irritated by my habit of brushing too hard.