Same exact situation 3 months ago...I was on day CD31 with no period, and got a negative home pregnany test intill I went to the doctors on CD33 and turned out positive!! I never experienced spotting though so I would go to the doctors if I were you!! GOOD LUCK!!
You may be pregnant. The first symptom of pregnancy is a miss period. You are also spotting which is an other sign of pregnancy. The best thing to do at this time is to take pregnancy test and consult your doctor.
I am on CD31, tested positive CD28 and currently have brown spotting. I would take a pregnancy test.