I am falling asleep fast i don't need even 5 minutes to fall asleep is this bad?

Not if feel rested: It's usually a good sign, when you fall asleep at night quickly. It means your body is used to getting a good nights rest, at a certain time. Of course, if you don't feel refreshed in the mornings, or you fall asleep easily sitting quietly during the day, you may need better sleep hygiene or a sleep study, to look for sleep apnea or other sleep conditions. Discuss with your doctor. Take care.