Could it be a hormonal thing? I have Crohns and i'm in the middle of a small flare but my periods have been getting much shorter this year.
Just took a pregnancy test and it's neg.
First thing is to calm down because stressing over it will cause your body to go out of wack. the next step is to let a doctor check you so you will know for sure. plus, if you are, you will need to be making doctor visits anyways and you'll have that lined out already
It can be due to a lot of things that your period is slowing or late. It could be related to stress. I would suggest to just wait a couple weeks, and if you still have not started your period, take a pregnancy test.