Soreness at top of stoma bag

I have had a stoma for just a few weeks, and it is quite high, and when I move about, the skin from which it hangs gets sore. I put on Calamine lotion and that helps. I am considering buying a belt, one of those with a velcro fastening to see if that will hold the appliance closer to the body and help support it. Has anyone a similar problem, and maybe can suggest a solution please?