Could I be pregnant?

Stefanie

Ok so I was supposed to get my period on Saturday and still haven't. I had some cramping a week n a half before I was supposed to get it. And my fiance noticed my boobs were getting bigger but that could be from my period. I took a hpt on Sunday and it was negative. Sunday night I had a bad migraine which I never get and ended up throwing up 2 hours later. It went away mostly on Monday during the day but returned at the same time on Monday night but I didn't throw up, today (Tuesday) I have a migraine again. No period as of yet so it's 4 days late. My hunger level is way up I'm hungry a lot.

When should I take another test or should I go to the doc for these migraines please help.