flushing didn't cause that. If you smoke something right off the plant or even quick dry it in a few days, it usually tastes like shit or nothing at all. Some weed is great right away, others taste distinctly better 3-4 weeks later. Assuming you dry it not-too-fast and treat it like a fine cigar as far as storage (55-62 RH and room temp or cooler)
I see mostly white pistils. i'd wait longer. get a 30x magnifier of any kind - hand scope, currency checker, jeweler's loupe. use that to assess trichomes. when you want to harvest will depend on your preferences. you need a bit of trial and error. 10-70% amber is a fairly general consensus. some even wait for 100%. i prefer an earlier window. pistils work well too, but probably a bit more variation in what you see compared to trichomes (i.e. trichomes have a stronger correlation, but use both.. even density of nugs is a great way to asses when to harvest as long as you only do that as final verification - don't be squeezing nugs the last 2-3 weeks, lol)
if you want something to make you sleepy, go with more amber.
as with all drugs, it may affect you differently than others. e.g. Nyquil knocks some people out (love it) and for some it makes them hyperactive (fewer peopel experience this, but happens). So, keep an open mind. don't read too much into what others do. trust yourself.
technically, cloudy is when potency starts to decline in a trichome. but, there's layers of growth to consider all at different points in development.
some people blast the shit out of their canopy at end and force a whole new round of pistils to pop out... what you smoke is the average of it all. So, even how it develops could impact choices related to flavor and potency at end.