Yesterday, I woke up at 4am and my body was aching and I felt sick. I woke up again at 7:30 and felt more sick. I threw up about 5 times yesterday and slept most of the day. I didn't have much of an appetite either. My temperature was normal. I hardly ever get the flu. I should be starting my period any day, and my breasts are tender like usual right before I start. I also have slight cramps that feel like menstrual cramps. Are these pregnancy symptoms or just the flu?