Logging period post BC

Brittany • Mother of 3 beautiful girls!
So I had my IUD removed Jan 9th 2017 and bled for 2 days afterwards. I just started what I think may be my period yesterday and am unsure how to log this since I'm not sure of my cycle days etc because I bled literally the entire 3 months I had the IUD in, which is why I had it removed in the first place. Prior to having the IUD put in I was only 6 weeks PP and never had a period so I'm in a rut on logging it in. Thanks ladies.