Refereed an U14 girls friendly today where I didn’t give a penalty to one of the teams. Attacker came into the area with the ball at her feet and defender came in from the side. Attacker got the ball trapped under her feet and fell over the ball. Defender got contact on the ball as the attacker was already on her way down. I was in a good position and had a clear view of the whole thing. What got to me was the coach who then proceeded to ask what I was playing at and that it was a nailed on penalty, he was right up by the halfway line . He wouldn’t keep quiet about it so I warned him that he was treading a fine line and I wouldn’t put up with it. I even offered to explain to him at half time why it wasn’t a penalty but he wouldn’t have it. How do people deal with this kind of thing in their own head as I felt that the way he was then affected me and my approach to the game from that point as it then seemed he wasn’t happy with any decision I gave.