before some days i started some physical exercise which i hve never done so is phyiscal exercise like some yoga and cycle riding is effect my period am so worried why my period late bcu never my period iregular than why this tym am so worried plz help me and i want to tell u i never intimate wid any boy am virgin and some day i feel lower abdominal pain and back pain and so i quit any physical exercise and i feel something discharge my vagina but i feel i didi not seen any thing but i feel something white but not seen what happend with me