Leaking at 31 weeks?

Hello ladies. I was in l&d on Friday afternoon for painful pelvic pressure and cramping. They ran tests looking for infection, amniotic fluid, dilation, etc. All clear. I have been having a normal amount of fluid leaking since I got pregnant but today it seems to have stepped it up a notch. It is watery, but not enough to fill a panty liner. I am still having pelvic pressure but the doctor said it was just growing pains as baby is going through a growth spurt and preparing for labor. What is an acceptable amount of leakage before I should be concerned? Also, I have been having a hard time catching my breath even while sitting and sleeping. Is this normal? Thanks!