I had the same issue with one of my girls. I overnuted a bit. I flushed her out and it cleared up in a couple of days. But you may want to wait a few days to see if it just goes away on it's own.
If you're really worried we're gonna need more info. like medium, pH, style of growing, nutes, schedule yata yata. Also better pictures of the whole plant, please use white light.
