I had done my IUI on last month (19th Oct).I was ovulated on 19 th Oct. After IUI, doctor prescribed (susten400) tablets for 18 days. My last LMP was on 6th Oct. My period was due for 4 days.( I am not sure about my cycle length, since it is irregular, it may varies due to my pcod issue). Yesterday, I was travelled to a nearby place by car. After came back home, I saw a brown color blood mixed with white Discharge. After that, no blood or discharge came till now. Is this a sign of Implantation? When I can test for pregnancy? Plz replay I also have slight Stretching Pain(sometimes) , but not like period cramps and also nausea like feel.