Period is three days late......

🌸H
All my test are negative. Ive used many different brands. A few had faint lines. I just don't know what's going on, I'm never late. Having sticky creamy discharge and mild odd cramps or pelvic pain.
 Has this ever happened to anyone? I'm so worried. I've had 5 pregnancies ( between the ages 16-23) and two live births a stillborn and one chemical and a miscarriage. And I've never expierienced anything like this. I'm having so many pregnancy symptoms. Dark areoles, nausea, bloating, headaches, and peeing every hour or so. Someone anyone know any info to shed some light on my situation. The photo I'm attaching was my faint positive about a week ago.