The question mark is because I'm not sure its a sprain. I'm not sure it hurts in the right amount for a sprain, and here's a guide:

Light Pain - Indicates a trauma to the limb, usually just a hard blow, followed by swelling.

Medium Pain - May indicate a Sprain or a hairline fracture (with potential for a Full fledged fracture, if left untended and applied pressure on)

Severe Pain - Usually indicates a Broken limb. but may also indicate a sprain. the more complex the fracture, the more agonizing the pain.

 

On the first item (light pain) - you can step on the afflicted foot or apply pressure on the said limb, with a price to pay of course.

On the latter two items, you can't really apply pressure. it seems to hurt quite well as it is.

Mine has got swollen, since I did step on the said foot. I was out and about doing some physical excercise on a "Fun Day" with my co-workers and bosses.

 

I hope you all have a non-painful day and a very pleasant week! :)