Fear, Distrust and supecion of thers.

Hello doctor,I went to a psychiatrist approximately 18months but no improvement in my condition,my problem is trust, I never trust anyone especially women,my thoughts are very abnormal I don't know how express but in short every woman cheats for sex I have seen many friends who had girl friends they only love for sex (male and female) after their work done they leave them,and also everyone around me is fake in my view and thinks about me badly,also whenever I read news about cheating in news my problem gonna be worse,I'm unable to sleep in nights every thought is about women,my parents are trying to fix my marriage I don't how to tell them,if my condition like this her life also will spoil.my condition getting worst day by day, please tell me what my condition is,what are the necessary things to do to get out of it,