DNA test

I am desperate for a dna test to be carried out and my little girl is now nearly 4 but i can't afford one as they are so expensive. I really don't want to go on a talk show and have my business aired on national tv but it is causing so many arguements within my household between me and my husband, i also would like to know if he is the birth father for many reasons but mainly for my little girls sake as when she is older what am i meant to say to her! the feuds could have all been over and sorted if this test was done by now i'm at the end of my teather and don't no where to turn.