hey everyone....the other day i was fingering my gf and i was about to go down on her but she was bleeding so i didnt.....i wasnt do anyhting different then i usually do so i was wondering what could have caused her to bleed and it wasnt alittle like in some of the other articles there was a bit of it but i think its cuz she was so wet it made it spread out more but what caused her to bleed and how can we fix it...

also one more question....she was going to give me head and i was fully aroused but after about 10 minutes of it i was losing my erection..what can i do to strentghen my erection and be able to stay up while she gives me head....i think it might have to deal with sometimes she hit my penis iwht her teeth and it scraps, can that also be why im losing arousal...ive only been able to keep it up the whole time once and it was for 20 minutes what can i do....

someone give me some advice