I'm very confused as to where my period is...?

Hi there,

I was just wondering if anyone out there would be able to help me out here... I'm 16 years old and have been in an active sexual relationship for the past three months, and today is exactly 8 days after my period should be due. I know straight away that's ringing alarm bells for pregnancy and what not, so on the first day my period was due I took a home pregnancy test which told me I wasn't pregnant. Obviously I was relieved, but my period still had not come. I took another home pregnancy test (different brand as well), 4 days later and again the result was not pregnant. By this stage I wasn't worrying too much, just waiting for my period to come (which it still hasn't) but today is the 8th day after I am due for my period. I took another pregnancy test (a different brand to the previous two) about half an hour ago, and yet again the result is not pregnant.

Now, I guess I'm getting a little paranoid.. where is my period and why is it so late?

About one week after my last period, I had taken the morning after pill after suspicion the condom might have leaked. I haven't received it since then, it couldn't be a side effect could it?

Also, I'm noticing a bit of a discharge in my underwear that smells slightly of chlorine... please help :)