Usda loan freak out

La

My husband and I are in the process of buying a house with a USDA loan. We've been working on it since around July. Everything is done on our part and our lender was supposed to send our file to USDA underwriting Monday morning. She said it should take the underwriters a few days to approve the loan. We still haven't heard anything. I'm so afraid this is a bad sign. We've busted our butts sending in the necessary paperwork and having things around the house fixed. I'm trying not to freak out but would you take it as a bad sign you haven't heard anything? Or is no news good news? Closing date is aug 30