Early labor?!?

Been having contractions for months so I really don't know.

But had a few intense enough to keep me up last night, and had very light pink tinged discharge this morning.

Now continuing to cramp and have contractions on and off and feeling like I have to poop (like just a lot of pressure)

Contractions are about 3-5 mins apart and about a minute long but not consistently and I've been having these for months, just not with the pink discharge or cramping.

At last check I was 2.5 cm dilated and 50-75% effaced