I am a step mother of a 15 yr old step daughter. She recently reached out to me and asked to come and live with her father and me. She shared how bad things are between her and her mother and that she and her boyfriend have been sexually active. I am very concerned that she may be pregnant I had her do 2 home Preg. test and they both showed neg. Does anyone know if you put a Preg test in water or run water over it instead of urine, will it show a neg. result?? I have made her an appt. with a Dr. to start her on birth control but, just wondering if she could tricked the test somehow? I'm afraid she may be in denial.