Hello!
I would suggest you to go for an X-ray and check if there is any problem with the talus bone which is present on top of the arch of your foot. As there is very little soft tissue to protect the top of the foot, bone injuries are common. The second, third and fourth Metatarsals are the most commonly injured bones due to something falling on your foot. Without any fracture you would need physiotherapy and anti inflammatory medications to decrease the pain and inflammation. I would also suggest you to wear proper footwear.
Take care!