Got an offer on my second flip

[Aaron Hensley]

Everything has went smoothly. Bought the house for 12k, put in 27k in reno. Listed for 78k and got offer in 11 days for 75k which I accepted. She quickly ordered an inspection and sited 3 very small items which have been rectified. Appraiser valued it for a little over agreed price of 75k. He turned appraisal into the buyers mortgage company. The mortgage company then rejected the loan because they saw that I bought the house for 12k and then selling it a few months later for 75k. I have sent my agent my cost rehab spreadsheet as well as before and after pics of the property and she sent to appraiser to give to underwriter of mortgage company. I haven't gotten word back yet if this will work. I will also say that this is a USDA loan. They said if I had the house at least a year, that this wouldn't have happened.  Has anybody ran into this? How did you remedy it? Does this happen a lot?  Thanks.