I live in Canada. I knew that I might have a daughter, and tried to find my ex. I finally found my daughter. She is 17 now. I might get a DNA test done. If she is mine, will I have to pay back-support for the time I lost with her ? My ex left and tried to never let me find her by telling this girl a different last name of her "biological" father knowing she was looking for me, and this way, would never find me.

