you prob ruptured a few vessles in your anal cavity while working out .
pretty common, some guys bust them in their eyes to where their whites looks sickley red.Some guys actually bust open small vessles under their skin.
I busted a few in my calve awhile back and it turned blue then purple.when i first started neslons calve workouts.
You would prob need a prepH stick to insert in your but to help keep swelling down.
Also trenbolone does have lot of side effects .The stuff was pretty toxic for me I could not handle it and stopped using it after 2 weeks a few years ago.My major problem was headaches and intestinal pains.