Dark line below my belly button?

Question

A dark line has appeared below my belly button and it ends at the very bottom of my belly. 
I've had hair there before but not a line. 
What is this?

Answer

I started getting it when I was 4 weeks pregnant, seems to be getting darker and darker. Perfectly normal from what I have heard

Answer

It happens during pregnancy

Answer

It happens when you get pregnant

Answer

I have a faint line like that a while ago.  I wasn't Pregnant or anything.  It just went away

Answer

It's called Linea Nigra and is very common in pregnancy.

Answer

The other cause may be because of puberty or most people have it and it will just fade away on its own

Answer

I don't think I'm pregnant...I'm pretty sure I haven't ovulated this month. Is there any other causes for it?

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