Ok, relax & take a breath - first of all your plant looks beautiful - a bit stretchy, but healthy. Now, you need a bigger pot SOON, that one is way too small. Get one that holds a couple gallons of soil, transplant before she (if thats what it is) begins flowering.
Next you're gonna have to supply additional info.
How about;
lighting information, ie.. hourly schedule, wattage, lamp type etc...
Nutrient information, ie.. NPK, type, dosage, etc...
Lets start there & I'll do what I can to help.
Peace
GWN