Bloating and discomfort. Kindly help me.

I had Laryngopharyngeal Reflux after which i used to take Pan D for 2 months and my symtops was almost fine and i stopped taking medicines 15 days ago. Now 3 4 days ago after eating food (normal food chapati and vegetable) I am felt bit of constipation and tight stomach and a feeling of lump in throat and discomfort. Now since yesterday my motion is not that bad but the bloating is present after eating even 2 rotis and i feel full even after 3 hours and I had small reddish ulcer under the tongue and even on side of tongue and in throat which was bit pinchy kind of painful while swallowing. Even I hav been feeling throat discomfort when I woke up in the morning. I asked ent specialist and he adviced me to take antireflux medicine and becasule for some days as he said it may so be due to stress. Can it be anything serious or just due to ant reflux medicines cessation or normal disgestive problem. I am very worried n can't focus on studies i have my upsc exam on 3rd june. Kindly help me.