Its sound fine mate. if your pot is around the size you say it is then you prob need to repot in the next week. I had this with mine and i changed from the 7.5 liter pots i was using to 15 liter ( 3 gallon ) You want the roots to become stable enough to repot but not root bound so that when you do repot they don't fall apart when you take them out.
If you go into my profile then view my public profile and go to where it say's statistics and click on that then find my thread my first grow. there are pic and some good advise in there for you..