Burnt or Done buds

Hi everyone, I have been lurking around for awhile and decided to finally make an account. I have a plant that is in week 13 been flowering since week 8 and is budding nicely except for the top bud looks done (pistils have turned color and shriveled), I was thinking maybe it was just burnt though because some of the smaller leaves around the bud looked brown and burnt. It is a fairly small area and I have a 150w hps and a large fluorescent running 12/12. Should I go ahead and harvest the top bud or let it go?

any help would be appreciated thanks in advance
 
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