I feel you, it's good to be cautious. If you recovered from a mecha/trena stack you'll be g2g from a derm/stano stack. Bloods is the sure way to know however many people don't get them done and go on just fine. I don't see a need for a mild stack like derm/stano unless piece of mind is something you really want. Yeah PCT can be rough, the clomid I ran for my pct last turned me into an emotional wreck I couldn't wait till it ended but I recovered great from it.