I understand your concern. This is quite common in Teenagers because teenagers usually lack the right amount of fiber in their diet or by drinking to much milk .
Constipation is best treated by making changes in your diet to include more fiber foods.
.For immediate relief try a stool softener. Most of these medicines are available in the pharmacy over the counter and do not require a prescription. They include Metamucil, Milk of magnesia, Citrucel, mineral oil or Senokot.
Go to this website to read more and how to treat this condition.
With just a few changes you will be on your way to a healthy lifestyle.
You should take a stool softener and let nature take it's course. That's the only way it's not going to hurt.
Take stool softeners and after eat dried prunes they help with constipation.