Pregnant?

Ok so I need some help or advise. I've got a thousand things going through my head so try to keep up. A week or so before my period was due I noticed that my face had broke out, my appetite had went through the roof, and I had a little tummy. Which the acne is normal for me as well as eating more and the bloating. But usually as soon as I begin to bleed my face clears up. Well it hasn't. And my appetite is still way higher than normal. And I thought my tummy was from the blood collecting for my period. I had a 3 day period. It starred the 20th of august and ended the 23rd. I still look bloated. I've noticed I'm also very tired. I can't seem to stay awake ever!! I took a home pregnancy test and it said negative. Could I Still be Pregnant?