Yes it is a periodontal gum disease. Bleeding gums are a sign of gingivitis, or inflammation of your gums. It's a common and mild form of gum disease, and it's caused by a buildup of plaque at your gumline. 
To prevent bleeding from gums go for proper cleaning , brush your teeth twice a day, use fluoride contained mouthwash, consume vitamin c contained foods, prevent sugary foods and beverages.

You will need to visit a dentist and undergo a proper check up , and with proper oral hygiene measures you will be fine.