You don't have anything to worry about when it comes to ALS, my friend. You're issues are clearly in your back and nerve roots. Your EMG showed no evidence of ALS...that is GOOD news. You have fasics, but no clinical weakness or atrophy, so that is also good.
Keep taking your anti-depressants, I take lexapro and it's changed my life. My journey began in September with some perceived weakness and twitching. Over time, I've developed atrophy and twitching in many places, but I still do not have ALS. So many other things it can be. Stay strong.