Agree it is normal, but you should hopefully already be taknig your pup out and about in arms, as socialising should start as soon as possible. (Obviously not to places where there are lotsof dogs, just in case, but to reasonably safe places such as shopping areas where you may meet a few dogs but not too many. I have alwasy found upmarket garden cventres good because the dogs you meet will mostly have been vaccinated ... our local one even does dog microchipping sessions for half-price organised by a rescue!!!)