My foot is very swollen and paintful when I walk. It's been 2 weeks and it's not getting much better. Should I be worried ? What could be the cause ?

I'm a Female,15 years old, about 175cm tall and weigh about 55kg, I dont have any previous medical problems and only take Magnesium. 2 weeks ago on friday my midfoot started to hurt. I thought it would go away in the morning, but that wasn't the case. The next morning when I woke up my foot was a bit swollen but incredibely paintful, I could barely walk without crying because of how bad the pain was (the pain went all the way from my mid-foot to my toes). On saturday me and my family were travelling to the mountains for skiing, so my parents just told me that in worst case scenario I would stay in the hotel instead of skiing. From sunday-wendsday I was skiing everyday and I wasnt feeling any pain while skiing, but walking was still very paintful. Afterwards we went home and the pain has gotten better, but the swelling has only gotten worse. Currently I barely feel any pain, but the swelling is terrible. I can't wear most of my shoes due to it (I literally can't put them on) and I can feel a sort of lump ? I'm not sure what it is cause it feels hard almost like a bone, but I didn't have it before and I don't have it on my healthly foot. We didn't go to the doctor because it's not paintful anymore and my parents don't think that it's broken so they don't see rhe point in going to get an X-ray. I've been using a comfrey oinment that my parents bought but other than that I don't treat it. Should I be worried or will it go away ? And what could be the cause of it ? Any help would be appreciated.