Is it bad to have a prescription for Adderall if I'm going through a custody battle?

I have been diagnosed in the past with A.D.D. and was prescribed Adderall for it. I couldn't afford it anymore so, I just let it go. Now I have SO much going on at work and my daughter just started school and I have to now help her with her things as well. I just have a lot of trouble concentrating and it's very frustrating and it's affecting my everyday life ...... I was thinking about going to get back on Adderall, now that I can afford it again. But, I'm about to go through a custody battle with her dead beat father and I'm afraid that if the courts order me to have a urinalysis done that they will see I have A.D.D. and I could lose my child. I mean, the father hasn't been in her life for nearly a year and a half and he never helps with her. He doesn't want to pay child support and I'm afraid the courts will grant him custody if they find out I have A.D.D. I'm perfectly capable of taking care of my child. I'm not that bad! I would just like to take Adderall to have the extra help in my concentration. I feel it would help me both at work and with my child. I will not take it however, if it means I could lose my daughter. Please answer back if you have experience in what I'm asking. Thank you!