Get a new passport immediately. Rethreading of an Indian passport is one of the most common modus operandi for document fraud and while the USA is probably ok with it as they have the records of the originally issued visa, other countries will be extremely suspicious and may cause you significant delays or other problems.

You can get a replacement booklet via Tatkal in 24 hours at your local passport office. This can be carried in conjunction without affecting the validity of your US visa.