Fiction is not always tooth decay, it can also mean gum recession which exposes the root or hypersensitive teeth. Dr. Rodney Raanan will be able to analyze which fiction you have. In the case of gum recession, a specific procedure can be done, which is sort of filling the area of the root exposed.
Bleeding gums can be an early indication of gingivitis. It is not normal for gums to bleed while you are brushing or flossing. It is abnormal for your skin to bleach during a bath, right? So, it is for your teeth to not to bleed when you are brushing.
Flossing and brushing are good when done simultaneously. Brushing cleans the surfaces of the teeth, but flossing get in between the teeth where the brush cannot reach. You can see a perfect combination of the two is a sure oral care.