Sativa flowering time question

Hey guys. I have a nice little sativa thats been buding for almost 11 weeks and it doesnt look like the pistil are changing much. Niether are the trics.. In fact, it looks as if the younger,smalled buds are growing new white pistils. This didnt happy with last plant and just a bit sketched that ill let it bud too long. All information is welcome.

From what I've read, you harvest when the trics get milky. Are the leaves turning yellow yet? If not I'd just wait a while.

Sativa can take awhile, depending on it's originating locale.

sativas are usually long flowering, some can take 18 weeks....

Holy shit! 18 weeks? But yeah there are some nugs with milky tric and the leaves are yellowing and dieing for sure.