Question: Prego symptoms?!

Hi, so May 2014 I found out I was Prego but miscarried in August 2014 and having a difficult time getting pregnant since then. For the past couple weeks I've been having breast soreness, insomnia at night but sleeping all day, white vaginal discharge, cramps like period pain (not expecting it until around the 20th), back pain, headaches, itchy nips, eating more, but kinda having cravings, and very emotional. Not sure if I'm Prego or my period is just playing games or I'm just making it up in my head. Plz help!!