Hello,
Thank you for your query at DoctorSpring.com
The symptoms your husband is experiencing are secondary to the stone in the ureter. Majority of the stones of the size of 5 mm are expected to pass out by themselves with the help of medication. However if they don't pass out even after 3 weeks of medication then you certainly need to see your doctor.

As far dietary recommendations are concerned your husband should cut down on protein intake (pulses, nonvegetarian food, cheese), salt intake, table sugar intake and drink two glasses of lemon water every day without salt.
Feel free to discuss further,

Sincerely
Rajiv Goel

Hello,
Thank you for your follow up query.
It would be difficult to comment on these above mentioned specific foods since there is no scientific proof in favor of or against them.
However, the following dietary recommendations have scientific backing:

• Avoid beets, spinach, rhubarb, strawberries, nuts, chocolate, tea, wheat bran, and all dry beans (fresh, canned, or cooked), excluding lima and green beans, these are known to increase kidney stone formation.
• It is very important to drink plenty of liquids. Your goal should be 10-12 glasses a day. At least 5-6 glasses should be water. You may also want to consider drinking lemonade.
• Eating large amounts of protein may increase the risk of kidney stone formation. Your daily protein needs can usually be met with 2-3 servings a day, or 4 to 6 ounces.
• Limit eating processed foods such as hot dogs, deli meats, sausage, canned products, dry soup mixes, sauerkraut, pickles, and various convenience mixes.