Peanut size something thick in throat.

10 days ago when I was gliding my index finger inside my mouth I for no reason reached a little deep into my throat near the epiglottis. As I was gliding my finger I touched something hard very hard of the size of a peanut(singdana). After that I have kept constant watch on it and also every specific details of my mouth. I noticed my mouth smells bad even though after brushing. Also when I touch the peanut sized hard thing and smell my finger it smells disgusting. I have Oral Submucous Fibrosis and my dentist has given me SM Fibro for it. Before the dentist I went to a General Doctor long ago and he had given me Candid mouth paint, ATM (Tablet), Rantac D, Zincovit, And some Mahacef or Mahacort I dont remember it well. Also I have quit all my chewing habits 2 years ago. Although smoking was on and off for some time but I have quit that now. Sometimes I do get acid reflux. And I am 19 years old. Started all this chewing when I was 12 and quit when 17 & Smoking from 13 to 19. 8months gap.