grace period after graduation

I graduated in May, I-20 expired in August, so applied OPT in June and got approved in the end of August, there are three months between the time that I graduated and the time I got OPT, Will this cause a problem in the process of applying green card? When you talk about grace period, does it mean the time between graduation and OPT, or expiration of I-20 and OPT? Also, I lost my receipt of OPT application, so I can not prove what time I applied. Please help if you know, I'm appreciated it.

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• 回複：grace period after graduation -HHH- ♀ (372 bytes) () 06/02/2005 postreply 09:27:11