I was carrying school dinners back and accidentally spilt yoghurt on school playground and left it as had no idea what to do when I walked out they was redirecting children because of the yogurt
Please do not worry. It has happened now. If it were to happen again you could ask the best way to clean the ground. Do not let this make you feel stressed. It was just an accident.
i hope you will be able to see a doctor soon. it's terrible to have anxiety and no one to help! try and relax if you can. do something that is calming to you. what happened really was just an accident and i'm sure everything will be fine.
You can always ask for a phone appointment. I am concerned about you as you sound very worried. Nobody has the right to shout at you. Just because they are your manager does not mean they can do that.