i need an answer to a very delicate question. if after 13 years, i decide to have my son and his presumed father dna tested and i find out that the presumed father is not the father, what are his rights? i had custody for 10 years and now he has custody, but i'm almost positive he is not the father and yes he was told this possibilty when i was pregnant but he chose not to persue the issue and find ou for sure. it was ok for the 10 years that i had custody, but now he has custody and is putting me and my son through hell. so i've decided to get the dna test done. if i find out that he is not the father what can he do? what will a judge do?