Hello,
Unfortunately, you won't have more definitive information until a week with the repeat scan. At that point, I'd think a visible fetal pole and heart beat should be seen. Until then you should remain hopeful.
best regards,
Dr. Downing
Sorry, but it doesn't look good. A seven week scan typically reveals a heart beat, as well as a 'grain of rice'. At 8 weeks, arm and leg buds are evident. The u/s combined w/the brown spotting make a cause for concern. I would hope for the best, and prepare for the worst in this case. Take care....