last weekend i was out in the city with my mates and we were staying in a hotel and i went to tackle my mate and he reflected me off him, and i went head first into a concrete wall and i heard and felt my neck pop, now my whole left side of my neck and shoulder is sore, stiff, and it feels tired (like it feels like im holding something heavy) and there is a lump in the muscle on my neck, and i had a lump on my head