whisker---as someone who has recently "been there and done that" with the needed meds, may I make a suggestion? Get rid of them sooner than later. I took them for five days after my surgery, less than the suggested prescription...and they, as you said, took up a ton of room in my head. When I stopped them I had a night of minor w/d symptoms (restless leg and lack of sleep) and it took me a couple of days to feel right again. It was an horrific reminder of what could have been.
I freely admit the fantasy of taking more crossed my mind, as I was less than 90 days clean when this occured. But, I had a a plan. The meds were locked in my home and my partner kept the key. He left me one pill for the period during the day when he was at work. More than once I debated about taking it...too much head room surrendered to drugs again.
Just my experience. I hope it helps.