Advice in need

So 38w5d so this morning I guess I've been having some cramping but only on the right size lower belly and pain continues down my butt to my thigh .... My leg felt worse, this all happened while i was sleeping but awoken by some uncomfortable pain. FTM , and besides a couple BH contractions n back ache no other signs of labor. Any advice/similar experience???? before I go at doctor.