Originally Posted by MrShake
Assuming you used extract and not all-grain, you will be fine!! the DMS that people worry about has already been boiled off during the manufacture of the extract.
Not entirely true. DMS will still be produced as long as it's above 140, although not as much as an all grain batch.
If I'm doing stovetop I leave it covered until I get a good boil and then remove. There's a potential for DMS here but I doubt you'll have problems.