This could definitely be non-gear related, but there are things you first need to observe: and this is gross but necessary
(1) The Color: Bright Red means it is close your "exit," possibly indicative of a hemorroids, or an anal fissure - BOTH are possible from extreme strain when lifting heavy...SO of course being on juice and hitting new PR's and training heavier could be source of this. You will or could also notice, increased sensitivity / itching. NOW, a dark tarry color could lead one to believe it is bleeding further up the intestines, in which case go a Doctor's immediately, worse case could be polyps, Crohn's, Ulcerative Colitis, etc.
(2) Where is it At - On the toilet paper, in the feces itself, or pooling in the water:
On the TP or in the water, can help conclude it is "fresh" and therefore most likely brighter in color, ie closer to the "exit." Actually as a part of your fecal matter it most likely will be of darker color, ie see a doctor.
(3) Have your BM's changed as of recent - more frequent trips to the restroom, consistency of stool, etc: This of course leads one to believe there is more going on than just a minor issue, see a doctor.
(4) Good luck and be prepared to have some sort of lubed up instrument shoved up your ass if you decide you need to go to the Doctor's. But don't be a pussy about it, because its better to have that moment or two of discomfort instead of a lifetime of something awful.
Take care.