What is wrong with my foot? Should I see a doctor?

the inside of my foot(i looked it up and im pretty sure its a metatarsal bone) started really hurting when i walk on it. it started about a week ago and i thought it would just go away but it hasnt and now i can barely even walk right.So I just started track a couple weeks ago and ive never ran before. should i see a doctor about this? it hurts pretty badly but idk if its just because im new to running. i asked my friend on the track team and shee said i should get it checked out in case its a stress fracture or something. Should i see the doctor?