Thank you for writing to us. I have gone through the query. I think that your boyfriend has either a kidney stone or a Urinary Tract Infection(UTI). These are the first few possibilities. There are more possibilities but you should rule these out first. In a UTI, there will be a high fever with chills. This will cause a lot of weakness and severe pain as well. UTI needs to be treated with antibiotics which you would get from a Doctor via a prescription. A kidney stone occurs because of calcium collection in the kidney in most cases. This will cause the pain as the ureters try to pass the stone. You should see a Doctor to confirm the diagnosis. This is done with an X-ray or with a Ultrasound. The next step can be to wait or if the pain is unbearable, your Boyfriend can get the stone removed by a stone removal basket. This surgery will take less than an hour. Hope this helps you. All the best. Feel free to ask me any further queries.