One doesn't bleed with every flare...it depends on the degree of inflammation and how friable (fragile to bleed easily) the tissue is.
I pretty much don't bleed with flares except since the first 3 years (20 + years since diagnosis)...but as of the past 2 years, I've had mild bleeding with 2 flares and low in the rectum inflammation.
REgarding the pred....have you been tapering at all?
How many bms a day are you having?
Whats the consistency...loose, hard, etc.
You should also consider rectal meds.
Glad you're feeling better, however, it takes a while to heal and you have to get through the tapering process of the pred.
Go EASY on your work-outs.
q