The ball that a female produces before the pistil appears can tend to throw first time growers off. If you see a ball that is coming off where the node meets the main stock, should only be 1 ball per side. A little hair should appear from the center of this single ball. Give it at least another week to be certain. Pix would be a great help?

And if Nirvana has a history of hermies, STAY AWAY!!!:thumbsup: