Fishbone in throat. Should i do now?

Dear docs, please help me, I had fish in dinner 4 days ago, after that I felt that some thing got stuck in my throat, I tried all possible ways to swallow it but failed,next day I went to ent specialist she did endoscopy but she didn't find anything I can see swelling the bone must be here and then she did minor procedure in ot but she didn't remove any thing at last she said that now ur throat seems clear, she did endoscopy again and said the nothing is there now, she charged rs 6000 including xray endoscopy and minor procedure in ot.but I am still feeling something in my throat. I thought it may be just sensation but whenever I drink any warm thing I can feel it, like a small piece of blunt needle..what should I do now?