hi there is every chance you could be.. some people dont get BFP till a week later as it depends when implantation happend. the test usually says to wait a week in between.
but if you dont mind spending more cash, then i would test again as soon as your ready to.. use your first morning urine . if all fails get to doc if you can and get blood test. i must also add that somtimes women can skip a cycle and not have a period, this common and can happen at any time
good luck to you
If you are pregnant it will depend on how far a long you are if the test will show up positive.. i would wait a week ( i no its hard) if it still comes up negative i would get a blood test at your ob.. if it still says no wait until your next minstral cycle...
My doctor recommends testing every other day in the morning if you don't mind the expense of the tests. I could never wait a week between them.