I'm 38 weeks pregnant, I thought my water may have broken. It was a small trickle off and on and I noticed since last night my pee has been green?

Go to L&D. Pee is never green! what you are experiencing is very likely the breaking of your water and the green color is an indication the baby may have pooped in the amniotic fluids. This can be a sign of distress for your baby, especially if this has been going on since last night. Please go immediately to labor and delivery for evaluation!
See your doctor. You need to see your doctor and be checked to see if your water did in fact break. If it did, you will be given options regarding labor and delivery.