Wtf is lightning crotch?!

Ana • Nicholas 9/7/18 👼🏻 Liam 9/20/19 🌈 Matthew 10/21 💛

And how do I know that’s what it is? I’ve been getting this hurting feeling on the left vaginal area for a few days. This didn’t happen with my first pregnancy so it’s very new. I keep hearing about lightning crotch but I’m not exactly sure what it is, or if that’s what’s going on