W - i had trigger on day 11 on one of my (many) stim cycles, day 10 on another, day 13 on another - so don't fret on other cycles and timing - it will happen when it happens

i would suggest taking the day after EPU off - if they give you a general, even a light one, you're not supposed to do anything for 24 hours (meaning no driving, nothing that requires complete lucidity in decision making...)