Labor?

Katelyn
Hi ladies! 
So I'm 37w+4d today! At my appointment last week I was 1.5 cm dilated and my doctor could feel my little mans head. 
Today I woke up not feeling too well so I called off of work just so I could relax and not overwhelm myself. 
I've been feeling kind of pukey and I've been having contractions on and off.  And (TMI sorry) I literally took the biggest crap ever like I swear it was huge (so embarrassing 😳😂). I haven't been feeling "normal" today, my body just feels different and I feel different it's really hard to explain. Anyone else feel this way before they went into labor?