Potassium Sparing Diuretics

Could Hyperkalemia result if you take Spirolactone and eat a lot of high Potassium content foods?
Today I called the clinic and got an appointment for Tuesday afternoon to discuss this choice of diuretic. Some tests would be good, too. It would help to know if it was actually an overload of Potassium that was causing the bruising and painful night cramps.
If it's a Potassium overload unbalancing my electrolytes, I want the Medi/chemical set-up for that to stop. Otherwise, some of my favorite foods should go off the list. Some of them, I'm not willing to take off my list of possible healthy food choices.
It says, "Avoid foods that contain high amounts of potassium, including bananas, oranges, lentils, nuts, peaches, potatoes, salmon, tomatoes, watermelon."
Watermelon is a good diuretic. When the Spirolactone fails to deal with my fluid load, eating watermelon and/or taking ginger tea, or parsley tea does a pretty good job. Cucumbers are also diuretic although harder to digest. Perhaps I'll take a vinegar pill first when I eat cucumbers. Vinegar can make cauliflower edible for me. Bananas, I don't eat a lot of and I'll be careful what I eat bananas with. I'll certainly avoid eating them with meals where there are a lot of potatoes.
I've practically lived on potatoes for the last three years and I still love them. At this point I'd rather change diuretics (I think) than give up mashed potatoes with cheese. Maybe next Tuesday my thinking will be ironed out after I learn the facts of that preference.
Also, I'm starting to get excited about seeing Mandarin oranges in the stores. I adore Mandarin oranges as much as I do raspberries and blueberries which are not on the sin list. Unfortunately only frozen berries are economical now.
And that's not all I'm not supposed to eat. One thing I like that I can have lots of is water. If the Town officials would just smarten up and not put fluoride into it, my kidneys would be happier with my water-drinking.
If people want to poison themselves it should be a personal decision, not foisted on the whole town by some itsy-bitsy by-law.
I don't want night cramps, but I 'm not giving up my mashed potatoes with cheese, either.
So, Doc, what's up?