being uncircumcised and born in america ,to answer your question , yes i was self conscious
when we where in gym class and had to change / shower , i did have several guys make fun of me that my cock was different so i was always care full when changing for others not to see me , as far as girls , they where fascinated with my foreskin , later in life thing changed
when i go the gym and shower , i have had guys stare at me being uncut , several have even asked me question like how does it feel ? iam thank full iam not cut still have my foreskin.