Thanks for asking. I can understand the distress you are through. It could be an indication of problem known as Phemosis. A condition characterized by tight foreskin opening. It usually presents as difficultly in retracting the foreskin back. It is primarily a surgical case. It needs to be corrected. Depending upon the degree of constriction, the management can be decided. I would also need to know about additional risk factors.
Next Steps
I suggest, you must consult with a general surgeon. For more information regarding this problem, you can also post a direct query here on practo.
Health Tips
Do not worry. It is completely curable.