Fear of rejection. Medical condition?

Hi i am facing this pblm from last 1year. I was out of my home for 10 years while studying B.E n   working in Blore and was fine then. Due to some circumstances i had to quit everything and move to my home place. I was desperate to work at my home place jamshedpur jharkhand, but things didn't go well as i was nt getting my required profile or salary or working environment etc.. and from last 2 years i am jobless n left two jobs each with 3 n 5 mnths after joining. Now i m thinking to move out but i am not able to do so out of unknown fear. I hav stopped contacting my friends recieving calls no social activities . 24*7 m always thinking weird things. My life is at stake . I always think of getting out of it Bt i couldn't. Is it homesickness, depression, fear. Where should i go . I want to come out of it asap. Its killing me from inside. I cnt share it to anyone as no one will understand my position. Pls let me know m i dealing with a serious medical condition ??