I have become extremely paranoid of everyone around me. I found out someone actually was watching me and had taken extreme measures to ask around about me so a degree of my suspicion is correct. But now, every single conversation I have, it leaves me horribly stressed and suspicious without any reason. Every small word I say to someone leaves me scared to the point I haven't been able to sleep for 2 whole days because of how much I think about it. I've become suspicious of all my friends and everyone who tries to speak to me. Do I need to visit a psychiatrist for this? What course of action is recommended?