doctor visit today

all of you know that I took a pregnancy test at home the other day and that it came back positive so I went to the doctor today to get another done to make sure ​they did a free of charge pregnancy test but the weird thing is the test that they did came back negative. And the last to pregnancies before this one came one day positive and a couple days later it was negative so I don't know what to do or think. Any suggestions that might be able to help me?

04
    11/27/13
    8Theresa Gould
    Yeah, if they didn't do a blood test, I'd request one.
    0
    About Tiffany Warden
    Current: Conrad, Iowa
    Birth: December 28
    On Moms.com since: Nov 15, 2013
    24 just married