I have had this happen to me-- many times. I have tried most of the remedies given here. Including going to the urgent- care so they could unplug my ear by squrting water into my ear. Which is risky and I had to sign a waiver I would sue if they damaged my ear. Talk about desperate. UGH.
This is a frustrating experience and that time was probably the worst. And I made it worse by trying every remedy! But those ear wax removal kits are helpful, if it's not too deep in the ear.
For less drastic times, I have found a couple drops of hydrogen proxide in the ear, cover with a cotton ball. Then lay on the opposite ear for a few minutes. You'll hear some popping as the peroxide is cutting through the wax. When it stops you might even feel the water moving around. Then with the cotton ball still covering the ear, lay on that ear so the liquid runs out.
You might need to do this more then once. I would wait several hours in between attempts-- like morning and night or even just a couple days in a row. Just be careful because too much might be too much and cause a bigger problem.
PS @DiamondsandGold I would call the PCP and let them know your true diagnosis was discovered by the urgent care. They probably won't do anything. But I'd probably start looking for a new PCP. Those prednisone steriods are serious meds. They shouldn't be just handing them out not knowing what they are actually addressing.