reveg?

So this is my second time posting I didn't really get any solid advice from the last post.. but anyhow I'm outdoor and I thought I was getting close to harvest, the buds were getting fat, dense, and heavy and it seems like about a week ago I started noticing that the buds were stretching and what used to be heavy and dense is now starting to look fluffy.. it's like the stems are elongating or something.. from what I've read some sativas seem to hit some kind of growth spurt a couple of weeks before they're ready and my plant appears to be sativa dominant.. it's a seed plant (which I pulled from MAC and Cheese) . Here are a couple of pictures from today..

I can't tell from the photos, low resolution and fuzzy. As long as you're in the northern hemisphere, night hours should be increasing, so it seems doubtful it would be revegging. If you're in the southern hemisphere, then it's more likely.