I've gone natural, even before the steroid busts. Just a personal decision.....I just don't want to be a "lifer", one those guys that are on trt/hrt. Plus it was my last year of playing sports in college and won't be competing anymore.
However, your reasons for quitting are different than mine. It is a good decision to go natural and lay low during the steroid busts. I'm already going to assume that your diet and cardio are legit and in tact so I won't give you the "clean up your diet and pay attention to what you're eating" routine. As far as supplementation goes, there are plenty of legal supplements out there that will give you "steroid-like" gains.....pro-hormones, pre-cursors, pro-steroids/designer steroids.
superdrol, pheraplex, halodrol, m1,4 add, etc.....there are supps out there that actually have 20 to 30 even up to 40% conversion rates to real steroids like Dianabol - methandrostenolone - and bold! Just look around and do some researching, man....too many to list. good luck,
~Alc