My last period was 28th Dec07- 3rd Jan08.
I'm not normally late, but I haven't got any period since then..
I don't really have any other symptoms, what could this be?
Advice would be greatly appreciated.
Thanks

So, you're saying you are only one day late?

One day late... means nothing. In fact, there are women who are a week late, and even completely miss their periods.

Have you recently moved somewhere new? Have you recently changed your diet? Been stressed mentally/emotionally/physically?

Being a day... maybe 2 - 3 days is harmless. If you are truly worried, I suggest getting a home pregnancy kit.