@mamabee, oh so I'm having a boy. I know they produce testosterone and we produce estrogen so maybe because it's not a girl I dont have a higher level of it ? I dont know but at least I'm not the only one
The darker you are the more it appears. I was reading about it one day. I have one but it's very faint... unless you're looking for it you can't see it. It also depends on how big you are.