Wtf is going on with my body

Allison
So my period is late by one official week, I wanted to take a pregnancy test a week later but tonight at work I started getting cramps and I was soooo bloated, it was crazy I kept checking for spotting but I got nothing. I've been under a lot of stress because due to school and personal problems, and my boyfriend and I recently started really having sex. Any afvice or has this happened to anyone before!!? Help!!!