Quoting Malissa Kay:" my cousin had to have an emergency c-sec 7 years ago and had a hard time finding a doctor willing to ... [snip!] ... allow a VBAC with her newest daughter, and this is 6 years later. Best of luck you just have to find a doctor willing to do it"
Emergency sections are usually a different cut than a planned. While mine wasn't totally planned we did know about it a day before I had to go in. With an emergency a vertical cut is more likely and generally a section isn't allowed if you've had a vertical cut. Mine is the bikini cut, which is stronger and less likely to rupture. I just don't know if the time frame is safe.