when to start pct: prop,npp,masteron

Hi guys,
I am currently on a 12 week test prop, npp and masteron pop course.
I need to know when to start pct. I looked in the information section and it said that npp has a waiting period of 16 days. I stopped the npp and masteron prop at week 10 and will continue with the prop until the vial finishes (approx 2 weeks). Should i start my pct 16 days from when i had my last shot of npp? or 16 days from when i have my last shot of test prop? Test prop has a waiting period of 14 days, should i start the pct 14 days after my last shot of prop?

btw i will be following Doctari PCT. Is it necessary for me to take the aromasin? i am not particularly prone to gyno. During my course i took A-dex every third day at 0.5mg

Well you need to stop it when the last drug has worked its way out your system, so that would be the prop, 14 days after.. I like during this period to run an oral like, winstrol, primo, anavar or even tbol during this gap, starting 1 week you finish your last jab... Then starting PCT the very next day you finish the Orals, aka after the 14 days of the Prop you would stop the orals and move straight to PCT, but for you, just start once the Prop has worked its way out.