Flu like symptoms after TB treatment.

Hi , I had intestinal TB and I took medication and no TB infection after further test after completion of medication . After 2 months i started feel shivering , like flu types symptoms , I went to Dr and he looked at my lungs and intestine and all are fine , Then Dr suggested me antihistamine syrup , i felt better , but when I don't use after 4-5 days same symptoms started , then Dr gave me non steroid anti inflammatory med for 5 days , I took it and felt better and again the symptoms started after 8 days , I did blood test , my sugar level is 98 , CBC is fine , lymphocytes level 37 , and platelet count is 120 , and ESR is 24 Everything all fine , LFT is fine too .. Few days ago I had red dots type skin rash on my one hand .. What it could be ? Is it side effects of TB medications or have i infection or blood cancer or any other thing ? Doctor is unable to find it out .. Thanks .