mgt is on the right track. If you are worried about a stuck fermentation, take a hydrometer reading (no need to wait until Friday) and see what the reading is. Take another reading the following day.
Are they the same? If so, fermentation has effectively stopped.
Is the number too high? If so, you're not done, but have a stuck fermentation. Possible remedies include raising the temp, swirling the fermenter to rouse the yeast, or repitching. If the number seems right for your FG, congratulations, you're ready to transfer to secondary or give it an extra week in the primary and bottle.