Hi. Thanks for your query. Noted the history of bloating, fatigue, stiff and painful neck, lower back pain, one knee hurts, sores on the tip of tongue and hard to sleep at night due to back pain and bloating of stomach. Since there are multiple problems the basic cause should be found out and as seen in your case the cause can be bloating, which in turn can be due to something like enteric infection. The toxemia and bacterimia and septicemia thus caused can be the reasons for other symptoms that you have noted. I would advise you the following: Blood tests including culture and sensitivity, Widal test and the routine. Tests of stool and urine. Ultrasound of abdomen Antibiotic cover should help to tackle the basic infection and symptomatic treatment in the form anti-inflammatory with painkiller properties, PPI like Omeprazole, probiotics and multivitamins. I hope this would help you. Continue the treatment till you are cured.