Hello Doctor, I Have Been Having Spotting Right Before My

Hello doctor, I have been having spotting right before my ovulation for 7 days, aside from my monthly flow. I have done hormone profiles - no issue, I have also done pelvic scan nothing was seen. Although I have treated staph infection and it has Cleared but a little bit of coliform infection. I am confused cos dis has been happening for 4 months now. What else can I do.