Don't worry Op, you will still get high, I did the same mistake last grow, and harvested too early, I still loved to smoke it. Homegrown is the best, even when you fuck up. Can only imagine what that smoke would have been like if harvested properly. It's a mistake you only do once, next time you'll wait more, first time I harvested at day 56, now I'm at day 70 and I'll wait as much as it's needed. Good luck and I hope you enjoy your results, and don't worry, this ain't a race we will all get there, baby steps.