I just had a tooth pulled today because it was

I just had a tooth pulled today because it was decayed to the roots dentist had me on antibiotics until today after the tooth was out hegave me some gauze and told me to keep pressure on it. 5 hours later I noticed a piece of my gum hanging and the area is still bleeding the dentist told me it'd bleed for about an hour after the pulling, I'm kinda worried that I may have lost too much blood.Please help. And I'm a 17 year old Male.