Shooting pain in vagina😖

Nicki • #1🍼 due 12-5-18

1st pregnancy Almost 36 weeks & starting yesterday this has happened probably 12-15 times now I’m just walking or sitting/laying down and it feels like a sharp needle Is being shot in my vag quickly it’s for a second or 2 then goes away but hurts so bad....any idea what this can be?!