Anxiety, loneliness, fear, feel trapped.

I've been feeling really anxious for a lot of things for the past 3 years. I realized its not normal when it grew to a level where I had been asking local doctors for a medicine to overcome this.People around me don't please me or should I say I feel isolated. I am at a point in life where people are mostly worried about there career. I am too. I get very anxious when people ask me about what job offer I grabbed or what I will do after my b.tech. I don't have an answer to them. I have an answer for myself but not for them, my parents, relatives, neighbours, friends. This is what scares me a lot. I have realized that I get scared about every little thing in life that I get wrong. I am not grateful. I've become whiny. I want to change but also I don't want to. I cry and cry all the time thinking of these things.