Peed self? Pink tinge in toilet? Painful cramps?

I'm now 38 wks!

I woke up at nearly midnight needing to pee. When my feet hit the floor i had sudden urge that I needed to poo. Made it to the door and had a gush of what I believe was pee. A few more steps, another gush. Went pee, everything fine, no endless trickle or anymore leaking.

Went back to sleep - had these painful cramps in lower abdomen pretty regularly thru sleep but too tired to actually time them and they were not close together.

4:30- went to bathroom again, this time saw a pink tinge in the toilet and very light on the paper.

This is my second babe but it has been 8.5 years. Do you think things are about to go down?