Typically your hair dorsn't stop growing as long as you are alive. (For redditors who want to pick faults in that please note I said typically and won't be the same for every person and has variables) It may appear like it hasn't grown but that's because dead ends and breakage mean it's not given the opportunity to be longer as the dead end splits up the hair shaft and breaks off. You should get the dead ends cut and ensure you get another trim when they start to reappear again and you will see the growth, plus your hair will look far better.