I'm afraid you're nowhere near ready to harvest the ladies... your trichs are still mostly clear. WHEN you harvest is going to depend on what kind of high you want from your smoke... if you harvest when all the trichs are milky, the high will be energetic with no calming, relaxing qualities... if you harvest when 10-20% of the trichs have turned from milky to amber, your high will be a good combination of energetic/creative and relaxing but with no couch lock... if you harvest when the trichs have turned mostly amber, you'll be on your couch for the duration... and the THC will be rapidly degrading... So it just depends on what you want to achieve.
For them to turn milky, I'd say you've got another 2-3 weeks... 3-4 for a nice combo of milky and amber...
Good luck! And good smokes!