Stake it up dude. What's the problem. 5 day old seedling? In assuming your container is already filled to the top with soil.. Big no no. Always use half the cup. Then when the seedling stretches you add more dirt. sent from yo mommas house!
LOL. (sorry). anyways, go to advance posts and look for the paper clip and click on that. A leaning 5 day old plant is nothing to worry about. Check that it is still green and check daily for any amount of growth. If it's still alive and growing, let it lean. You may yeild more bud that way. Good luck.
prop it up with a swizzle stick or something, not a big deal. make sure u have a fan blowing on her (gently)to strengthen stem, keep lights close to keep stretching to a minimum. place more soil around stem. pics would help
ya it is still very green. it was standing straight this morning and when i wen to go check on them 2 were leaning