Anal prolapse

Recently i was looking at an unrelated medical site and came across some pic's of unfortunate folk with anal prolapse , very painful by all accounts . Women often get this during childbirth , others may have it occur when pushing too hard when constipated so i was wondering if any of you guys have had this occur during / post anal play , fisting etc . I love using round and oval shaped toys just pushed in far enough that my sphincter closes up behind them , after a short time i use this muscle to force it back out but i am now concerned that this wont be the only thing that pops out ! Would regular play with large-ish toys increase or decrease the chances of this happening ? I always use oodles of lube .

I'm not a doctor, and I didn't stay at a holiday inn express last night either. I have played with plenty of large toys 3.5" or more wide, and others as long as 17 or 18 inches, and I dont have any issues. I've been playing for quite a long time, and using large toys for about 5 years on a weekly or biweekly basis with sporadic dry spells tossed in of as much as 3 or 4 months.