Honey, There's Blood On My Underwear!

I've been very busy for the past days doing the usual household chores, writing articles and preparing our things (washing the laundry and packing)  for our trip to my husband's family home in Mindanao tomorrow. It's my mother-in-law's birthday on the the 11th and she already got us plane tickets a couple of months ago.

Yesterday, we just finished eating lunch when I felt a sudden gush. I immediately ran to the bathroom to check my underwear. I saw a discharge with a tinge of blood.

Is this normal or is there something wrong?!