Question

Hey good day
My past period which from May 9th to May 13th the blood flow was very light. My periods are regular and I have never missed one before now.
Now currently experiencing back pain, belly cramping, firm breasts, nausea, dizziness, feeling bloated, fatigue, frequent urinating and missed period.
I am 9 days late and I’m experiencing the symptoms listed above, however I have taken an at home pregnancy test and it was negative. But I’m still experiencing the same symptoms.
I need some advice please