Hi Kathie,
I know you are in a difficult situation because you are self employed, but you really should get xrays to rule out a stress fracture. It is difficult for me to guess at the diagnosis since I cannot examine you. There are also nerves that innervate the dorsum (top) of your foot that could be getting impinged, so seeing a podiatrist is a good idea, as they will be able to follow you up as needed, rather than seeing someone different at the Urgent Care.
Good luck,
JMK MD