I am also dealing with skins soreness and incredible itching!!!!! I am 6 weeks post-op and i was told could be becasue my stoma is rather flat and small so i am using those Hollister washer rings and the Adapt powder. I was using the Adapt paste but found that a couple of times i have needed to take the bag off within a few hours (due to leak - my fault entirely for not preparing the skin) and the paste would be very hard to remove - like superglue!
my main prob is gettin used to cutting the bag correctly and putting it on at the right angle - i think i am getting there now but i am still nervous about it. x