First where do you live? I assume in the southern hemi?
Is it indoors or outside?
Using rain water or distilled water only?
How much Sun does it get?

Purplemonkeydishwash,

That can happen with plants when they change climates if it was shipped to you. Even after repotting, sometimes a Sarracenia will just sit there and not grow for a while. Mine did that for a few weeks, then suddenly started growing larger pitchers than before. If the plant is getting at least 12 hours of light, with at least 4-8 hours of direct sun per day, has unfertilized sphagnum moss based soil with silica sand or perlite for drainage, is watered with mineral and salt free soft water, and its soil is always moist, it should start growing again soon.

Best bet with Sarracenias is to adapt them to outdoor growing by placing them in brighter sunlit windows each week until it is in the brightest window you have, then move it outdoors in direct sun all day. Expect leaf burn, but the plant will grow new leaves. If you are in mid-spring, the plant should receive plenty of photoperiod to keep it from going dormant.

I would add that if you have a porch that gets a lot of indirect light, you can put them outside on the porch to becaome adjusted to full sun. At least this way it gets addapted to the ebb and flow of temperature, breeze, humidity, etc...

purplemonkeydishwash,
I realise you're a bit further north than I am but my Sarra's are grown outside and most haven't started producing much in the way of pitchers yet. So long as the rhizome is still firm I don't think there's cause for concern yet.

Yes, I live in Sydney, Australia. I grow my CPs outside and only use rainwater but more recently, my sarra has begun 'fraying' and turning brown. Could this be a side effect of giving it too much light?