Nosebleeds that are frequent are usually not a sign of nothing serious but sometimes nosebleeds can be caused by some other condition that can be serious.
Our noses can dry out due to allergies, colds, or sinus problems or even dry air and cause the tiny blood vessels in our noses to crack.
Then when the tiny blood vessels crack that leads to temporary nose bleeds which usually stops on it's own after awhile.
Sometimes rarely though cancer and other conditions can cause frequent nosebleeds so if you continue to have constant nosebleeds and have no allergies, cold or sinus problems then seeing a doctor about it to get tested for some conditions would be a good idea.
Usually though it's nothing to worry about to get frequent nosebleeds and especially if your home has a lot of dry air especially in the winter time.
Dry air from the heating system can cause your nose blood vessels to crack because the dry air dries your nose out as well.