I am 39 years old and just over 35 weeks pregnant with my third child. My other 2 pregnancies were full term, 40 weeks. I keep having a tingling sensation in my vagina. It feels almost like I am going to pee myself. I have had an increase in vaginal discharge the past week or so. Is this tingling sensation a sign of labor or is it just the position of the baby? It has been 14 years since my last delivery.