Were you working on a narrative in Word to paste into a report or were you actually entering a report into a report form on a MSC website? Have you logged in to see if some or all of your report is there? There have been times when I lost internet or my computer crashed and I thought I'd lost my report, but when I powered back up and logged in, a lot of my report was there. I've had good luck this way with Sassie and Prophet reports and with Market Force. And I've learned from bitter experience to save often when reporting.
Somebody more computer literate than me probably knows about a repopulation tool.