What Causes White Color Vaginal Discharge And Headache?

i had unprotected sex with my boyfriend, three times during the time i was ovulating, it was twice in one day so about 6 total in the three days, i have been feeling sick on and off for about a week now, i had vaginal discharge that was like a white color that was kinda thick or in the middle of thick and waterier, i get headaches a lot more lately as well. There are times when i think i am really hungry but when i go to eat a meal i don't eat as much as i thought i would. Could i be pregnant?