Pink On Day Two of Expected Period

jajdjd

My period is a day late. I just felt a big flow and was overcome with joy because I believed myself to be bleeding, but this is the result I see.

Now, a couple months ago, I took Plan B twice in one month, and after that, my period came every second week for a month and a half ish. This period is actually a normal timing, except it is a day late from my expected day (yesterday).

I took a test the day before yesterday (Friday) and it was negative.