Getting up on the wrong foot (Literally)

I don't know what happened but when I got up this morning, I felt something on my foot. it was not sore but it gave me a hard time to walk properly. I tried to ignore it while having my breakfast but the pain stings a little bit.

I tried to pin-point the exact spot where it hurts most and good thing I spotted it. Though it doesn't hurt much, being unable to walk straight makes me feel uncomfortable. 

Until now, I cant walk straight. I hope I could do something about it until tomorrow. Otherwise, I would have no choice but to cancel my appointments on Saturday. =(