Hi everyone. I have a question regarding the i797 receipt for OPT. USCIS has notified me that they have received my application since January 29th. However, I have not heard back from them at all for the i797 receipt. I am stressing out since the end of this week would be the end of my grace period. I have asked my school's adviser whether I should send in another application in case the one I sent in got rejected, but he said there's no point. Does anyone has any advises regarding this?