What to do if it pains when I hold in my pee for even a second too long?

Here are some... Personal ability to hold urine widely varies among all humans and also along their life path. For now, listen to what your body tells you, do not hold urine until last minutes, and go to bathroom timely. Besides, collect and bring the information to seek evaluation and counseling as described in http://formefirst.com/eNewsletter06.html so to reach right Dx for right Rx & care.