Feelings of intense guilt over my parenting of child when young whenever I see things associated with childhood?

Counseling. I'm sorry you're having these feelings. If it's just associated with a specific area of your life (parenting a child), and not affecting your sleep, appetite or having feelings of guilt or sadness in other areas of your life, then this is something best be explored by a counselor or therapist, and not a doctor at this point. Your doctor may have good recommendations of counselors though.