Your remark about blockage of the urethra is not correct in the case of the OP, as females have plumbing routed differently, and it doesn't get blocked by that stuff like ours can. It just comes straight out, rather than the circuitous routing just below the skin that we have, where things often do get compressed and cause restrictions.
@nonameforme I haven't really said hi yet. Welcome! I hope you find what you need on this site. Also, yes, smaller releases are much less likely to leak, especially as your diaper begins to fill, and generally that's what I do, too. I wear for practical reasons, reducing bathroom stops during my work day and disruption to my sleep, and now I'm going 24/7 hardcore in solidarity with an IC friend who is having a difficult time accepting her need.