What If You Had A Son And You Didn't Know What Would You Do?

Do you mean if you had a son, and you just found out? Okay, depending on how many years have past, I would try to be in his life, tell him your his mother, and so forht!

If you didn't know you had one, you would not do anything different.  

Perhaps you can rephrase the question.

I would wonder how considering I am female that I had one and didn't know lol... As from a guy's point of view I wouldn't act any different unless told that I had a child. Then I would do everything in my power to create a relationship with the child and be there for him.

If I didn't know, I wouldn't do anything. If I was a man and just found out, I would do everything I could to be in my child's life.