I hope that the biopsy wouldn't cause these symptoms! Since they said it was in-operable, I suspect they didn't take as much with the biopsy as what would be needed for symptom relief. I hope, rini, you can ask the second opinion doctor if there is any thing you should be taking for the inflammation they found.
Maybe you are still healing from the process. You u be holding your head in the wrong angles for too long periods. I have a sister in law from New delia india. You should be well covered as for the good medical care. India has lots of great physicians.
I would recommend getting a second opinion from a highly experienced, well-schooled head and neck doctor as to whether or not the the parapharyngeal fibrosis is indeed something that cannot be operated on. It's generally good to get a second opinion, if you go to another doctor with many years of experience, highly trained. I hope you are also able to have a full-time helper in your home to care for you and your house work!