Do I have a hairline fracture or a sprain?

Anita_467

I used to be quite athletic up until October when I quit Muay Thai in school. I recently started again in an MMA Studio and had my first class yesterday late afternoon. At around 11pm, I started getting a really bad bone ache in my right wrist which has had problems before in the scaphoid in 2014 but never gave me problems in 2015 while I was doing Muay Thai then. I didn't fall down or anything, and I was using gloves and handwrap a yesterday so my hands had as much protection as it could get. Currently the pain is around my wrist and when I try to bend my hand backwards, my forearm also starts to hurt. My forearm also hurts while typing on my phone when I move my thumb. The scaphoid itself isn't hurting too badly, but when I do the scaphoid test thing, it feels uncomfortable and nearly painful. Please someone tell me if I have a hairline fracture or a sprain because I have 3 exams in the next week and I can't write more than a few equations without taking a break because it hurts quite a bit! I don't want to waste money on a doctor unless I absolutely have to so...
Do I have a hairline fracture or a sprain?
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