I got my period on June 15 and now it is over on June 18 could I really be pregnant?? I've been feeling tired and wanting to stay in bed all day been throwing up everything I eat been going back and forth to the bathroom and while I was on my period I been having bad stomach cramps and pains...

If you had unprotected sex then yes you could be pregnant, although a period would indictate you're not, but test any way, no one can tell you on the internet if you are or not.

thank u so much for this I really don't feel like myself anymore I'm always in bed tired I keep getting a headache but ima take a test in a few days my period never lasted for 3 days tha had me freaking out because mines is always a week or something like that but thanks=]

Adiveishere is right. Even in the slight chance, you can still be pregnant AND have both your period and a 'False Negative'

But nobody can tell you over the internet. Take a test.