Thanks for your query and an elucidate history.
Since you have got Proctitis
polyp, hemorrhoids means you have a severe Gastrointestinal upset.
Till this is cured the aphthous and aphthoid ulcers (more than 3 mm) will be recurrent..
Since all these disorders do not allow the important food contents like mineral , trace elements and vitamins
to be adsorbed properly you get multiple problems including bodyache, knee pains, backache
and any sort of problem related to the fitness.
I would advise you to get a proper treatment of all your medical problems, take multivitamins, get colon polyp operated, have proper diet , whichever suits you, and you can improve a lot.
Have periodic check-ups.