Fell over in the mud yesterday and apart from looking like a tit, I put ny arm out to break my fall. I've done something to ny upper arm. Shoulder I think is ok and wrist fine. But anything that involves using or moving upper arm and bicep muscle is really painful. If it stays in the sling it's OK. Slept OK as long as I didn't move upper arm. Nothing visible maybe the beginning of a bruise. A and E?