Differential Diagnosis of GBS. Many!

Hi Doctors, It was 2nd of June when suddenly I felt like weakness in muscles like that of Viral. I waited for 5 days but then I developed stiffness And numbness in calf muscles making difficult to Walk and whole body with fatigue. Since few months I'm also having gastro issues which I idiotically involved and on 9th it was the height of nausea after eating. I started talking to doctors in Pune and then travelled to Gurgaon. All my blood  reports were fine including liver fibro, lungs xray etc. I also underwent colonoscopy and endoscopy in Gurgaon where H Pylori has been detected. The fatigue, stiffness, burning in feets increased over days, then my back got affected it was like muscles are coming out and post that I have weak upper limbs now. I'm able to walk now atleast but seems muscles are weak and turns sore if I walk too much. Doctors have differentially diagnosed guillain barre syndrome. Request you review my symptoms for help. Many thanks in advance