Burning and pain in the vaginal area after intimacy, along with lower abdominal discomfort, can sometimes happen due to simple reasons like friction, dryness, or mild irritation during intercourse, especially if the area was sensitive or not well lubricated. In many cases, this settles on its own within a couple of days with rest and basic care. However, it can also be an early sign of infection, such as a urinary tract infection, vaginal infection, or sometimes a sexually transmitted infection, particularly if symptoms do not improve or start getting worse. Because you are also having lower abdominal pain, it is better to stay alert. For now, avoid sexual activity for a few days, keep the area clean with plain water, and avoid using scented washes or harsh soaps that can increase burning. Drink enough water and observe your symptoms closely. If you notice fever, foul-smelling discharge, unusual vaginal discharge, burning while urinating, or increasing lower abdominal pain, it is important to get a proper medical check-up soon so the exact cause can be identified and treated early, as delay can sometimes worsen the infection or discomfort.