Do i have to use a progestin recep blocker(PT recomended..bromo or caber) even when a test is combined with a nor19? What about using an AI (mayb Letro during the cycle. Also, when i stop the Tren two weeks prior to stopping the cyp, do i continue to use something to protect myself from progestin rebound or just stick to Serm's and AI's because the Test is whats active. How would i know a week or two is enough time to wait to use Nolvadex or any Serm and not activite any progestin in my body. I hope i made sense...PT. thank you for the recomendation, but difficult for me to find. SOMEONE PLEASE HELP ME OUT!!! THANKS EVERYONE