Kidney issues are very common in late pregnancy, your wife's kidneys are processing waste for herself and also a growing human. It's not some crazy disease, it's just an overload, exacerbated by the toxic crap we are constantly exposed to that requires significant, constant resources. My wife just gave birth a couple weeks ago, and had some protein in her urine at the end indicative of this.

If she is having kidney issues this early, she is also probably having blood pressure issues. Hibiscus tea is a very effective way to help lower blood pressure with no symptoms. My wife had a cup a day the last month of pregnancy for our subsequent kids after she had major blood pressure concerns after our first, and it helped a ton. It's super tasty- probably not for first trimester, but it's way safer than blood pressure medication in the third trimester when it's useful.

Drink tons of water, get tons of sleep and extra naps (our kidneys go into overdrive filtering toxins during sleep- which is why we always have to pee after waking up), get some chlorella/spirulina to help flush toxins, go full organic for at least the rest of the pregnancy, cut out all processed foods, stop eating all sugar, and definitely do not drink any soda- the phosphoric acid in most sodas is very hard on kidneys. Dr. Eric Berg has a pretty good youtube channel talking about different foods that can positively and negatively influence various metabolic processes. It's not the final resource, but it's a good starting point for understanding what's happening and what steps can be taken to reclaim your health from the charlatans at the hospital.

Vitamin D (sunshine is by far the best but it is hard in the winter, there's an app called "D-Minder" that helps you track when sunshine periods are available), Vitamin C- particularly from fresh veggies/fruits- bell peppers are just about the best because they are high in Vit C and low in sugar- and Vit C denatures at high and low temperatures- so supplementing is decent but not the same as real food, magnesium- nuts are great, potassium- apples/bananas/spinach/broccoli, Vitamin A/E/K from meat, and lots and lots of good fats... like butter, butter, and more butter. Also milk (whole- and try out lactose free if she can't handle pasteurized milk like many people), full fat beef, and more butter. Avocados/avocado oil/coconuts/coconut oil/olives/olive oil are also wonderful sources of fats.

All the crap we have been told about how animal fats and saturated fats cause heart disease is hot nonsense. The cholesterol in your blood is created by your liver out of dietary glucose. You don't have beef fat or bacon fat flowing through your veins, you have human cholesterol, and if you eat too much sugar, it gives you a fatty liver and spills out into storage if you have too much.

Bears eat berries and honey all summer and get super fat, and they use that fat for hibernation in the winter. Sugar is the primary culprit (and high glycemic simple carbs like bleached wheat with no fiber).

Anyways, we are praying for you guys! You can do it!