maybe damping off?

I dont really over water. I wait till the soil is pretty dry. But i was in a hurry so when i was watering my 3 seedlings i kinda poured a lot of water on them really quickly..right when i did that they fell over. I pushed soil around them to keep them up. But the thing is they have been growing still like crazy the past day or so. I just transplated them into a 3 gal bag today. Do you guys think they will be fine?

Fill the soil up to just below the node where to cotyledons first appeared.
It's possible they fell over because thye were too stretched.
Damping-off presents as the seedling falling over on a stem that has suddenly taken on a darker, thinner, almost shrivelled appearance.

ah yes that makes sense. They were very stretched...they still look very healthy and i put soil all around them. thanks