13 years ago I was married and when we split up she was pregnant and she did the divorce and DNA test with the other guy she was seeing and not me.
It sounds like you were married at the time, and now you belive that the 12-13 year old child is yours and not the other guy. I'd say sit down with one of the local attorneys here is the 10th circuit, many of us offer free consultations. It is much easier to discuss these things in person as there are a lot of factors that would work into your situation, what you want to have done, review what was done as well as determining how things currently stand. A simple answer is yes, if you have a reasonable reason to think that a child is yours you can file a motion to determine those things. The complexity comes out with all the details of your specific circumstances.
An action for Paternity would be your strongest legal remedy if you believe the child to be yours. This will require you to contact an attorney to file on your behalf and initiate the proceedings. An action for Paternity will involve a DNA test to determine the parentage of the child. If it turns out that the child is yours, be aware that you will then be ordered to pay child support and potentially back support depending on your exact circumstances. The court wants to facilitate a family environment for children and it is looked favorably by courts for a father to seek out the parentage of a potential child. Contact an attorney in your area to assist you further, and good luck.
This answer is not establishing an attorney-client relationship and is for informational purposes only. For further analysis of your question, please consult an attorney with all the facts of your issue for a more in-depth analysis.
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