Firstly, it's likely to be the Trenn aromatizing into progesterone. Nolvadex will do fuck all for this, you need Femara/letrazole, - an anti progesterone drug. For running a cycle with Trenn, for helping with trenbolone sides such as prog. gynecomastia, you should run Winstrol - stanozolol along side with the trenbolone. At least 25 mg per day, but i would run at 50 mg/day.