Missed period. Negative tests before the 20th . Pregnancy symptoms.

G

So I was due on around the 17th October and totally missed my period. I had one day of light pink spotting on the 16th and that was it . I had done a few negative tests and then stopped testing. I have a fair few pregnancy symptoms.

The worst being nausea, firm breasts, dizziness, tiredness, frequent urination and probably vivid dreams and heartburn.

Has this happened to anyone else and been pregnant?