gcaaa111:
First of all, do NOT panic and get stressed out. While it is easy for me to
say this, I have to tell you this because, panicking and crying WILL NOT help you in this situation. Let's try to resolve the problem here, rather than getting struck with it.
What you need to do is:
1. File for I90 - you can efile this by following instructions in
www.uscis.gov - with the option "Card lost/stolen". You will have to pay the money using your
credit card online for all the charges (around $300 if I remember it correctly)
2. Wait for the I90 receipt notice
3. With the I90 receipt notice and the situation you are in (you have to visit your home country due to emergency?), get an InfoPass appointment and
tell the Officer that you need to get the I551 stamp. Take all the details
such as the I90 receipt, your PP, your air ticket etc.
5. Your GC should arrive in the mail in probably 8-12 weeks.
6. In the mean time, you said you have an InfoPass appt tomorrow right? Go to the USCIS Office with your PP and your I485 approval notice and talk your way through to convince the Officer that you need I551 stamp as you have to leave the US due to an emergency and come back to the US. You MAY HAVE a chance to convince the Officer, but I would not bet on this one though.
Good luck and again do not panic...
howdy_howdy
//