I have a pain pump with prialt (ziconotide) and dilaudid. I am concerned about the side effects, like weakness, constipation, nausea etc. Should I stop this?

Discuss with MD. Generally speaking pumps are used to deliver constant pain relief at a lower dose since the medication is delivered where the effect is more notable. Oral pain medications can have similar side effects. Discussing your pain management goals with your physician is important to decide what is the best treatment based on your needs.
Question for your dr. Clearly you are on these medications for a reason. You should discuss your concers frankly with your doctor. There may be other options to control your pain but it is not possible to tell over the internet. Best wishes for feeling better.