Leaking urine without waking up is called nocturnal enuresis. In an adult, it usually means your bladder fills faster than normal at night, or your brain isn't waking fully to the sensation, rather than anything wrong with your kidneys. The anxiety you're feeling about it can make your sleep lighter and the problem feel worse, not better.
Next Steps
Please see a gynaecologist or urologist for a bladder and pelvic floor check. They may ask for a bladder diary, a urine test, and sometimes a sleep review, since poor sleep depth and nighttime urine production both play a role. Limiting fluids a few hours before bed can help meanwhile.
Health Tips
Try not to force yourself to stay awake to prevent it. That disrupts your sleep further and won't fix the underlying cause.