question: I do muay thai training and in this style of kickboxing you use your shin to strike. I was conditioning my shin (Hitting it and rubbing it with a stick, kicking the bag with my shin as most muay thai fighters do both amateur and professional) and after my training I noticed a painful HUGE bump/lump on my shin which I still have after 1.5 hours of noticing it. What could this be and how should I handle the situation?