stress or Pregnant?

So I have one child and kinda know the early signs, but I didn't know if anyone had any insight on obvious signs. Im one week late, fatigued, I could sleep all day if I could, bloating, acne (something I haven't had since I was pregnant 3 years ago), more moody then usual, lower back pains and my hair is falling out more than usual..i took a pregnant test a few days before my missed period and it came back negative...could it be stress in my life or something else?

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    11/24/14
    5sarah
    It could be but now that you've missed your period I'd test again
    1
    About Holly
    Birth: March 20
    On Moms.com since: Jan 30, 2014
    I am a 20 year old mom with a two year old little boy who means the world to me. Even though I am no longer with his father I have found someone who has a daughter and is great with my son.