Discharge

Chloe

My period is due on the 2nd of feb, I had a donation on the 18th of jan. I’ve just been to the toilet and when I wiped there was brown discharge ( tmi - and when I put it up a little bit ) I’m not sure how to explain the discharge, other than it wasn’t stretchy or slimy. I took a first response 3 days ago and it was negative as suspected. Is this my period ? Do I count today as the first day?