Burning at the end of urination after intercourse is most often due to urinary infection or urethral irritation; vaginal infection can also cause similar symptoms. Protected intercourse lowers STI risk but does not completely exclude it. A urine test is needed before choosing treatment. Please book a Practo consult with me if symptoms persist or recur.
Next Steps
Give a clean-catch urine routine/microscopy and culture, preferably after the period if symptoms allow; tell the doctor if there is discharge, itching, sores, or a new partner, as STI testing may then be required. Drink water and avoid scented washes and irritant products. Seek urgent care for fever, vomiting, blood in urine, or flank/back pain.