Hi, I'm 22 and just a few days ago I noticed a darker line under my belly button going all the way to my Pelvic area. I read about the line and that it develops usually in pregnancy. However, I'm not pregnant as I had protected sex followed by a period 3 weeks ago and no other odd symptoms.. I believe I just finished ovulating so maybe that plays a role? But I'm not too sure.
Is there any reason for this line to just suddenly appear? Thanks!