i had a very similar occurrence back in the mid 70s, Circa 76-77.
for a week i had vivid dreams in which the number 4 was very prominent, four people at a bus stop or walking thru a door with a number 4 on it.
one saturday i strolled over the pub and called in the bookies as i was want to do in my youth and upon perusing the board i saw virgina wade was fave to win wimbledon, thinking nowt of it i looked at the horse cards and lo and behold virginia wade was running, i thought lol i might have some of that but just then the dogs card rolled up the screen and bug##r me she was running in a dog race too, i thought cripes shes fit. i had a very weird de je vue moment and the dream came back to me but thinking nope it was the number four that was in the dream and there are only three wades so i had the three of them in win, doubles and a treble, but as i was writing the ticket i saw a horse called 'tennis champ' too WOOhooo! banged that in the acca with the rest of them all to win and grossed £7500. and a bit that day
not bad for a dream and as such i dont pass over them now lol