Pee or fluid?

I'm 34+3, pretty bad pelvic girdle issues and occasional irritable uterus issues too. In a scan on Monday baby appeared to be resting his head on my bladder. Anyway, this morning I rolled over to ease some tailbone pain when I felt something in my vagina. Almost like when you start a heavy period. I went straight to the bathroom and peed and shrugged it off. About 30 minutes ago I was changing clothes (a long difficult process with the pains) and my underwear had this wet patch that had gone right through to my pj bottoms. I hadn't felt wet so was surprised. It didn't smell like pee. Could this be vaginal or cervical fluid, considering I have 5 1/2 weeks to go? Any input would be appreciated.