What did you use to worm them with? Usually there is a withdrawal period where it is not safe to eat the eggs. The wormer does not have anything to do with them stopping to lay eggs. Its just that it may not be safe for you to eat them, depending on what you used.
Moving them like that can stop them laying. They usually don't like change and it can throw them off their normal routine. You moved them to a new location, probably changed their feed, and if you only got a part of the flock, changed the pecking order. If that is the cause, then all you can do is wait. If they were actually laying at the other location when you got them, I'm a little surprised you did not get at least one or two eggs. They often lay the egg that is already started through their internal egg laying factory when you pick them up, then stop until they adjust to the new surroundings. Not always, but often.
It is probably that they have just stopped due to the change. There are some other possiblities.
Regardless of what the people you got them from said, they may have not been laying. Many possible reasons for this. They may be too young which would be good. They'll probably start soon and you'll get them through their prime period. They may be too old, but even if they are old, an old hen usually lays an egg every now and then. Another possiblility is that they are going through a molt. A molt can be triggered by a lot of different things, not just the days getting shorter. Thye normally stop laying while molting. I don't know about silkies, but other chickens can look pretty rough when molting, maybe like they are underfed or not healthy?
They may be hiding a nest from you. I don't know your set-up, but this one would not surprise me at all with them in a new location.
You may have an egg eater, whether a chicken or a predator. Maybe even a human egg thief.
It is probably because they have been moved, although I do think them hiding a nest is a real possibility. I'm just throwing out a few other things for you to be on the lookout for. Hope I did not make you paranoid. Good luck!