Early vs. real labor? Seeking advice

Jeanine
2 nights in a row I've had multiple hours of contractions with lightening crotch and baby movement.   First night they were at most 10 minutes apart and as less as 6 min apart.  After 3 1/2hrs they decreased and slept.   Now night 2-happening again but seem a little worse.   I'm drinking water and took Tylenol but wondering if it's real and should call again tonight???   I don't want to be a wimp and keep calling!  I've had no other signs except loose stools.  I am 40+1 weeks.