HELP NEEDED PLEASE!!!

This picture is from another app called Flo and this is how it looks like

While this second picture is from Glow

Looking at it, i had sex on the 4th ( protected sex) and took Aftera (another brand of Plan B) immediately after.

From the 5th till the 8th, i didnt see any CM. But today, i spotted (dark brown in colour).

Again, i just started experiencing a sharp shooting pain on my right nipple only. And when i touch it a times, i feel it like a sharp niddle pain shooting from my nipple into my breast.

I dont understand what is happening...please can someone help me out....