Hi. Thanks for asking in Healthcare Magic. The light pink discharge is the show or the muco-sangineous discharge that occurs just before labor. This is a plug of cervical mucus and is usually mixed with blood to give the pink appearance. This indicates that the cervix is getting dilated and the head of the baby is descending down. This is not the rupture of membranes where there will be sudden gush of colourless fluid. The actual labor with true pains start only after the membranes rupture. Since you are primi (first time pregnant)you will get labor pains within two weeks at the maximum after the show. The pain you experienced is due to mild uterine contractions and not the labor pain or true pain. I hope this is usefulto you.