Pink discharge and discomfort

FTM at 38w+6. Had pinkish discharge and loose stools at 2am earlier, and barely slept since then. Extreme discomfort in my tummy when baby stretches (like every hour); tummy felt very hard on one side or even both sides. Is this Braxton Hicks? I suppose they are all signs of labour(?). Not sure if it’s necessary to check in with the hospital now, or should I wait till my next Gynae appointment which is tomorrow?