I am 21 years old and two years back I had depression and anxiety stuff related to somethings going to happen to me I went down having test of stomach throat and I use toh have chest pain alot that time I thought m having some major disease I went through psychiatric treatment. Now these days after two years m having some problem I am very thin I weight 51 kgs and my height is 5'8 these days I feel alot low pain in my chest sometimes when I get up or laying down I feel lazy all day long whether m in home for days heartbeat sometime raises I feel like all the time lazy and weak and m going to fall down I think alot yes but m really weak and feel that all day sometimes very much. I don't know if this I have some disease or what I just get vibes that my heart is not good or my body is really weak I don't know whatvto do after two years m facing it and that time also I consulted many doctors and end up with psychiatric treatment that was also the issue that time but I don't know about this weakness and chest pain I use to smoke that time weed I quit that now it's been two years and now I smoke cigarettes but that to very less sometimes one in a day or one in a week and since many days I haven't main issue is of thus weakness and my thin body I feel so weak all day and lazy as hell I don't feel like doing work with such weakness. Please tell me what should I do and suggestions where should I go and what tests or treatments should I get. thank you.