Is it possible to get BFP?

Erien • Just married on March2014. Expecting a baby on Jan2015 :)
I just did hpt just now and it is pm urine. I got BFN. I am one week late. Is it possible to get BFP after got BFN at one week late? Or is it pm urine can cause BFN? Its so frustating when I got BFN when I feel so scared to test. I'm still hoping there's BFP for me later on :(