Okay, I have been having issues with ad audio being played while I'm on Google (for like, one or two seconds. Never an entire ad and always right after I exit a webpage). This has been happening for about three days, but Norton is saying that it detects no problems with my Android. No malware or anything. Normally, I have total faith in Norton services, but I have no idea what else could be causing the issue aside from malware. I mean, there is no high battery usage or any other signs of things being amiss. If Norton says there's no malware, should I trust that?