Why haven't I got my period?

I was about a week late getting my period and I took a pregnancy test and it came out negative. It's about a week later and still no period? Why???

onlli thing I can say is take another test or it just might be that your period cycle is not on time so just take another test and see what is says

Your period is not always regular. There can be events in your life that cause it to skip a turn. Dietary changes, stress, or a new sleeping pattern can also affect your period. There's always a couple different possibilities for a missed/late period. But if there's that chance you think you MIGHT be pregnant, take another test. If it's continually like this and your not pregnant, I suggest seeing a doctor.

it could just be you weight to little or like me an eating disorder of your hormones might be out of wack I sugest if it doesnt change in alittle while see a doctor and dont wait like I did! good luck!