You could be shaving in the wrong direction, which causes ingrown hairs and bumps. You could also be shaving too roughly. You need to keep in mind that it is a very tender, easily irritated area of skin. For relief you could apply aloe vera or a hydrocortisone cream to the affected area.

Be gentle,Try making the hair wet and apply some soap...that will make it easierody .Apply some body lotion after shaving.