leaf fell off

my plant just sprouted a few days ago and is at the seedling stage. it has the two round leaves and the weed leaves are coming out now. the problem is that one of them fell off because of wind (im guessing). will the plant keep growing? the plant still looks healthy as ever.

Well from what i know is that plants initially get thier nutrient from humidity until they grow thier first leaves, after that they can use light. So if it staert to look like it isnt growing out or dying off id keep the humidity up abit. dont quote me tho