We'll if you want to put up some pictures that show different angles and comparing the two, we could make a better assessment. 2 weeks, in my opinion, is too early to start feeding nutes. But then you get into what soil are you using, does that soil already have a strong dose of nutes, what nutes are you using, how often are you feeding it and so on. Just remember you can over do it. Read, read and read some more. This site has a lot of info. The grow I'm in on is entirely based off the forums we read in here. You'll also learn through trial and error. Just remember to not over react as it can be equally as harmful. Back to your plant though, put up a couple new pics and try to show the difference in them. Yellowing could mean a few things, but most likely (based on your picture) nothing is wrong.