Not sure if I read this right, but why did you flush before flowering? Flushing should be done the last week (7 days) of flowering.
Flowering takes about 8 weeks with most plants, and it sounds like your only on your 3rd week. I would continue the nutes up to the last week of flowering. Flushing should be done the last week (7 days) of flowering. But I take it one step further, I use Twilight which enhances the flavor.