Need help!!

Me and my bf are TTC for over 6 months now. Now i am 12 days late for my period which was supposed to start jan.3rd and its now the 15th. I have taken 3 HCG HPT and all are negative. Im freaking out because i have had cramping almpst everyday, i get hot flashes, last night i couldnt fall asleep, i have white vaginal discharge in my pee, i have a headache, dry mouth, im moody, and extremely tired everyday. And TBH my stomach hurts and it feels like its turning all day and i feel super nacious but i have not thrown up. What are the chances that i am pregnant?