I have not yet had any medical check up done but I think I’m suffering from anxiety over a year now and to my observation it has gotten worse in the past month. Since two weeks I have started getting uncontrollable involuntary internal shakings. Idk how to explain it in a better way, it feels like my internal body is in constant vibration mode or the way you feel during an earthquake. This mostly worsens when I try to sleep at night to a point where I’m unable to sleep until 3-4am these past couple of days. I’m also experiencing a loss of appetite and focused thinking ability. Then again, these behavioral symptoms relate to ADHD, which concerns me more. 
My brain is like in a constant fear and my body in a never ending earthquake. It can be everything that I’m doubtful of or it can be nothing. But either ways it’s making my everyday life very very uncomfortable and depressing. Idk what to expect next.

P.s. I’m really looking forward to helpful advices and also some medical advice if available. I’m new to reddit and I don’t know how to get this post up for maximum help🙏. Nevertheless to make this clear I cannot choose to seek medical help in this case rn because I’m a student and I have no money for professional help, neither do my country offer medical insurance. So this is my only way out for help.