H1B VISA STAMPING AFTER 2 MONTH OVERSTAY AS I GOT INJURED AND HAD A FRACTURE **URGENTLY**

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I overstayed for around 2 months in USA as i got badly injured. As I feel down and I had a fracture in my shoulder. I have a medical certificate from doctor stating that i was in a bed rest and was not in a situation to do any thing. I got the certificate from doctor on 24/Oct/ 2012 and then i vacated an apartment, donated my stuff to salvation army and got back to India on 21/Nov/2012. My visa was expired on 07 Sept 2012.

I stayed until 21st Nov 2012. Now i got the offer from the same company i was working for from past 4 and half years on March for different client. I went though a client interview from india. Client was happy with my interview. Client wanted me to join from Mid of April. My company filed my h1b extension based on I-140 approval. They (my company) received h1b approval until Oct 2015. I will have to go for visa interview in Delhi. What sorts of question i should expected in visa interview. I am little bit worried on overstay. What kind of question they may ask and what should be my answer for those. Please advice me.