hi, so for about the last 2 months i have been having crazy cramps, i had my period on the 27th of oct. last , it was very light unusual only lasted 2 days, my stomach has been feeling tight , a couple weeks ago i kept waking up in the nite or right b4 bed feeling sick, i keep sweating and freezing.. all this stopped for about a week and a half not all the way but mostly . but for about the past 3 days i have been feeling like this again. i am sexualy active..for about the past week by back has been hurting very badley by my tailbone on the right side it sends pains around my hip and down into my leg sometimes. it is worse at nite it has woken me up hurting very bad.. also the last couple days ive had a creamy white vaginal discharge.. what could all of this be? please help