I have a Medtronic pump with Morphine. The pain clinic I go to you have to refill every 3 months. So, the first thing they do is drain the morphine left in the pump which is 50% of the total and then refill it with 20 whatevers and we start again. I know you fear addiction and don't want to increase it, but it's better than pain killers by mouth, where all you do is sleep. They don't give out targeted drug delivery to just anyone, so I suspect your pain is pretty bad. I've had about 4 or 5 bump ups since 2012 and I'm still in the low dose amount. I hope things get better for you.