I was thrown in a pool by a few of my friends and i hit my shin , exactly where the knee stops to be exact on the right , and within a few minutes a lump started to form , i still have it and it hurts like hell when lightly touched the next day , there is no sign of brusing what so ever , my skin is still the same colour , im abit worried as i will be goinv abroad next week , can anyone help me please ?