I quit drugs in 1986 but kept drinking because I didn't think it was a problem. I was also ignorant about "recovery" and thought it was just about quitting. Well my drinking progressed and that's why I'm on SR.
I think if you continue to get high, even if it's not pills, you are still feeding the addiction. Perhaps you need support or rehab. Have you tried NA? Sought out a place to detox?