You will be fine my friend, you are going to see that there are a lot of people in this field that would like to see you fail for reasons such as envy towards you for the way you work, look, communicate for what you know and the reasons can go on and on the best thing to do is C.Y.A ( cover your A** ) and your partners, work very diligently and all those haters will see that you are very capable of doing your job.
There is a lot of shock factor that goes into are line of work as far as what your calls entail the more you work the less surprised you are but there is always that call no matter how well or long you have been working will shock and make you question your methods but that is why you are with someone ( your partner ) that you can bounce interventions off to make sure you are in the right and it is the best interest for the PT, I work in Chicago the Englewood and Roseland are and both areas are very high trauma places that if it was not for the great work of both me and my partner a lot off calls would of not went the way they did, try to find that person that has your back and you guys just groove at the scene and deliver great PT care your partner I found out my first few months on the job means the world out there so try and find that one person that will help you instead of put you down and things will be great for you my friend, keep on chugging and if you ever need to vent hit me up on PM anytime.
Good luck, and just block out the rudeness and take care.