Girls: Period blood flow issues?

I thought I was supposed to start my period, and I did but it was dark brown and not a lot (it was like the equivalent of the last day of my period only at the beginning) it was like that for 2 days. Now it's normal and the regular amount and red.

I'm curious as to whether those 2 days counted towards my 5 days...Today would be my 3rd day I'm hoping that it would be over in the next 2 days or am I going to have a longer period because I didn't have a lot of blood flow those first few days?