H1B expiring in DEV15 - have to go to India


I have H1 valid till 15Dec 2013 ( stamped ).

Currently my extension is filed and I have received receipt number.

can I travel to India in Nov and return back as I have Visa stamped till 15 dec? OR will immigration wont allow saying you have only 15 days remaining?

Please let me know- I have to book a flight and I am really worried.