High impact kick to the thigh- could I have a hairline fracture to the femur & not know it?

Is it possible to have a hairline or spiral fracture to the femur and not know it?

for doc and x-rays. Of course I'll go to the doc if it fits the symptoms. But the docs in my town are very expensive and I worry I'll just be sent home with painkillers or muscle relaxants.

I had a kick, a (muay thai) "teep" against my thigh yesterday. Was meant to push me back but instead of getting my tummy he kicked my thigh spot on, just as I had started to lift my knee up. So my thigh/femur was completely vertical. Like a head on car crash. No bruise but lump mid-way and hurts to the bone. Hopefully just bruised bone or muscle tear. Mad because it didn't need to happen, but of course I gotta keep up with the guys. Stay off & rest or??