It's called a linea nigra and it is caused by hormones much like the darker nipples and armpits pregnant women can get.. I didn't get it with my first pregnancy and so far haven't with this one either.. You might get it you might not.
Its called the linea nigra and its caused by hormones. Theres an old wives tale that says if it goes to your belly button you're having a girl. If it goes all the way up to your sternum its a boy. Mine is super light an you can hardly see it. I'm 31w. Some women get one, some don't. Some are light an some a dark. Its caused by the same hormones that make your nipples darker.
I'm 30weeks and have had mine since I think 3 months. It goes from my sternum to my pelvis. I also happen to be having twins and from what it sounds like the wives tales mentioned above are right because I'm having a little boy and a little girl lol. :)
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