beginning of labor?

Emily

I’m 38 + 6days. last night I noticed some bright red blood when I was wiping.. i think maybe my bloody show? Not my mucus plug as there was no mucus, and I woke up recently to a lot of period like cramps and some back pain. It’s my first baby so I’m not sure what signs to look for.. should I call or go in? I’m scheduled for a c section Friday.