Are there any pills that will keep me calm or get rid of my nervousness?

So I have a job interview, and well I refuse to go to a psychologist but I have nervous breakdowns and agoraphobia issues, I want to buy a medication that would make me feel calm because honestly if I don't take something I might have a breakdown infront of te person, I cannot talk to someone alone eye to eye for more than 5 seconds or I would panic and feel the erge of puking, fainting or just run away from the person. Someone please help me find a solution to this I'm extremely concerned.