Hi. I had unprotected sex on feb 10, day I ovulated. I always have a 31 day cycle so my last period was Jan 25. I missed my period as usual on 25 and today is day 13 of missed period and I had beta Hcg done , showing negative. I was advised a 5 day course of duphaston 2-0-2. I had very light bleeding, few drops today , every day for last couple days, but only a few drops which is unlikely coz I have heavy flow and doesn t look like period blood. Pls advice. Is there a chance I m pregnant ?