Hi Sarah,
Mead(e) is notorious for being slow fermenting. Honey lacks certain nutrients and it is very important to add vitamin (B1? can't remember) and yeast nutrient to the mix - your recipe should state this so I'm assuming that's not the problem. Is your yeast too old? Is the jar at the right temperature?
If none oof this answers the question then I would advise patience, maybe it's just slow off the mark

fingers crossed! I started off a batch of mead in February from local honey and only racked it off for the first time last month (it's delicious!).