Cramping after mucus plug at 39.2

I’m 39.2w

Was 5cm two days ago already at 39w

Today I lost my WHOLE mucus plug w blood (it was so so so big it was def the whole thing!) and immediately started cramping bad on belly and legs

Contractions come and go they are very tight but not super painful yet....

Is the cramping normal after the mucus plug or is it labor beginning?