To the OP--you should be fine, just imagine that you're picking a tomato the day after applying fertilizer. No problem, no difference.
Can one of you doom and gloomers that insists on flushing, please explain what it is that you think is collecting in the bud? Plants don't uptake 'fertilizer'. They uptake nutrients, like nitrogen, phosphorus, and potassium, etc.. There's no mystical event taking place that that transports a clump of fertilizer through the roots, up the stem, and out into the leaf or bud sites. Think of your own body...when you eat peanut butter, do little globs of peanut butter collect in your fingertips? No, you digest the peanut butter, and your digestive tract (greatly simplifying the process here) absorbs the sugars, amino acids, and fats that your body can then use for whatever it needs.
The idea (meme) of flushing makes tremendous sense, but only if you don't understand what's going on biologically. I think that's how many of these Old Wive's Tales are propogated.
Now, I'm new to growing these plants, so if someone has some actual evidence that there's something going on in the life cycle of this plant that is different from every other plant, I'm open to learning more about this exception. But I suspect the marijuana plant grows just like the other millions of plant species on Earth.