helo  i m 19 years and single i have viginal discharge frm abt 6 year before my periods an sumtimes it lik water lik sumtime its lik in milky color bt usualy it comes all the time somtime it stop for 1 day i day before my menses i feel lik pain in my back bone .and my menses cycle is al right bt nw a days i feel lik smell in tht white fluid i have itching also in virgine with pain in my back bone  im so woried abt it ?i ask the doctor she said its normal discharge .i m having ths prblm before my manturation has nt been startd at the age of 12 years.