Lightning crotch?

Miranda • 22 years old, first time mom of a baby girl born 12/8/18

Im due December 23rd and last night I had pains at the grocery store that I believe were lightning crotch, meaning she’s moving head down. Is anyone else experiencing these? I want to know if I should expect an early delivery or if this is normal. I don’t have any (or at least strong) Braxton Hicks though.