Well. tonite....? not sure what this is. (tmi)?

Ok. so tonite i was working with my mom to help her out. i got done with what i was suppose to do and i sat down on the floor, i had been sittin there for about 5 mins and all of a sudden it felt like i started my period. so i got up and went to the bathroom. the whole center of my underwear were covered with a white stretchy discharge and my left ovary has been hurtin on and off all day!.. Ive never had white discharge before its always been clear. any ideas.?