Like I said many things can cause this I didn't want to go straight to pregnancy, simply because everyone assumes that is the cause. Just be careful, hormones can also cause this. For three months I had all the symptoms of pregnancy but wasn't pregnant. I just started my period out of no where. Good luck...
I would know if I had the flu. I've had it plenty of times to know when I have it and when I don't. I ate my breakfast drank my juice cause I'm hypoglycemic so i that's a must everyday and I just out of nowhere coughed once then threw up.
Sounds like pregnancy to me but the only way to be sure is to go to the doctor's and have a test.
Pregnancy can be what it is but other issues can cause this to. Chrons disease is one and just a simple over reaction of your hormones. Or you could have caught a stomach virus. If the symptoms don't get better fast go see a doctor. They would be able to rule things out. Until you do try eating bland foods and make sure you stay hydrated.
You could be pregnant. Take a test.