Since past few days megastar Amitabh Bachchan has not been keeping well, however, if believe the old chap, there is nothing much to worry about as the work continues, and he is thankful to his well-wishers for their concern towards his health.He assured his enthusiasts on Saturday that he is improving by posting on his blog about his recent work. "Concern after my health has reached an unjustified proportion, undeservingly. More has been attributed to it than was factually correct," Big B wrote on his blog."I am getting better by the day... But your concern is legitimate, and I do appreciate your fond get wells," he wrote. Earlier on October 14, he made his fans know that he was down with fever and stomach infection. However, on Oct 17, he returned to his work, shooting for Kaun Banega Crorepati."Work continues... So did an ad shoot for a client (on Saturday) and had a surprise visit by Priyanka Chopra who was shooting next door... looking stunning as ever! And when that was over, by 9 drove off to receive a youth encouragement award ceremony by the Society Magazine," he further wrote in his post.Big B was felicitated with the award at the Society Young Achievers Awards 2013, organised by Society magazine.