Today I found one plant leaning over against the side of the pot. Its about 3" tall and the problem is very weird. The stem is not broken, but the bottom 1/2" of stem(or so what I thought was stem) is extremely thin and a darker color then the rest of the stem. It's probably around 1/3 of the diameter of the main stem. Temporarily I mounded the dirt around it to prop the plant up but now I am afraid I may be smothering it.

Could this have been caused by it stretching to the light? Any ideas? Can she survive? Ill snap a pic. This was my first plant ever to seed/sprout and I'd like to keep her(hopefully a her) living.

edit: the plant is 6 days into sprouting from dirt and a bag/papertowel germination.