Virusscare am I safe

So I randomly looked for the Sony live wallpaper on my z3+ to see if it's on the playstore to move it to other devices and I found the apk on a website called android apk org, anyway as soon as I visited the website just go look I got a fake softwares out of date warning looked very native to android not sure if it was an actual notification window of android, anyway it wanted me to download some cleaning or antivirus app I tried exiting out, there was only an ok button once I tried getting out the phone started vibrating continuesly for 3 seconds 8r so,had no antivirus installed but I've installed avast should I worry about any of this can you get a virus through things like that