You could take another test it takes something like a week after fertilisation for it to come up on a pregnancy test that you are pregnant. Althought anything from stress to bad eating patterns to delay your period.

Well a few days after I took the first hpt I took another one and that was also negative. Im not stressed out or anything and my eating patterns are normal. In all reality I want to be pregnant and i'm hopin that I am so i'm planning on waiting until thursday the 1st before I test again.