Short period

Okay guys so I am on the pill I want to stress that and I got on my period on Tuesday and it only just started getting heavy today at about mid day and yesterday. But now when I go to the toilet there is pretty much nothing there, only what looks like discharge and a slight tinge of orange colour in it. And by slight I mean slight. Is this normal for it to only last about 4 days on the combined pill?? This is what it looked like about Ten hours ago

And this is it ten seconds ago

Is this normal??