Chastity and orgasm denial discussion

So I’m finally taking the plunge but have a few worries. Even if it fits really well, is it typical to sense a slight tug as if circulation’s being restricted a bit, maybe some minor numbness, or like your insides are being drawn out slightly? With an ideal fit that seems to be exactly what happens to me, and I wasn’t sure if anyone else has felt the same. I haven’t been able to keep it on because of these doubts, though I’d really like to.