Google voice and volume issues

[AC Question]

Randomly and sporadically, no matter what I'm doing, the google vocal search engine will start up, and with it the volume will spazz out. This happens despite me turning "ok google" off. I have an LG sunset with ver 5.0 lollipop. I rooted my phone for a few hours to delete some bloatware (the file viewer it comes with and google books and newsstand) with king root and then unrooted it. This didn't start occurring until today, despite the rooting taking place a few days ago. I don't believe it has to do with the issue. I have tried the usual turn it off and on again and turning off the vocal functions of google. I do have a case for the phone, but its the one it comes with.