What is the first miracle in the gospel of St Luke?

Maybe you could say it is when the angel appears to Zacharias and tells him his wife Elizabeth will have a son. Or when Mary conceives. - Luke chapter1

The first miracle Jesus did in Luke is in chapter 4 when He passes through a crowd and escapes being stoned. Also in chapter 4 Jesus casts an unclean spirit out of a man and heals Simon's mother in law.