I think if you had something that the bottle could fit into and that could either be supported around your neck or waist it would be great.
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If I remember correctly, I had a tube running from the bottom of the scars, with it dropping into a concertina type of plastic bottle that was in a mesh bag pinned to a strip around my neck. I was not in any pain, and still worked in the blood bank. That marvelous charge nurse insisted on checking it every day I was there!! She had been the one to urge me to have the mammogram along with other hospital employees, since as a volunteer I was considered non-salaried personnel.
(Thanks, Merlita!! You just may have saved my life!) And another employee in the blood bank gave me a soft baby pillow. That sure did help, since I sleep on my right side all the time and that pillow kept my arm off the stitches till they healed.