Urinary Tract Infection (UTI): This is the most likely diagnosis due to the combination of strong odor to urine, which can indicate the presence of bacteria, and pelvic pressure with urination, which can be a sign of inflammation or infection in the urinary tract.

Bacterial Vaginosis: Although more commonly associated with vaginal discharge, bacterial vaginosis can also cause a strong odor and may be accompanied by urinary symptoms if the infection spreads or if there is a concurrent UTI.
Kidney Stones: While kidney stones are more commonly associated with severe pain, they can also cause changes in urine odor and pelvic pressure, especially if the stone is obstructing urine flow.
Interstitial Cystitis: This condition, also known as painful bladder syndrome, can cause pelvic pressure and pain with urination, and some patients may notice changes in urine odor due to chronic inflammation.

Pyelonephritis: An infection of the kidney, which can present with similar symptoms to a UTI but requires more urgent treatment to prevent serious complications like sepsis or kidney damage.
Sepsis: Although less common, if the infection has spread to the bloodstream, it could lead to sepsis, a life-threatening condition that requires immediate medical attention.
Obstructive Uropathy: Any condition that obstructs the flow of urine (e.g., kidney stones, tumors) can lead to severe consequences if not promptly addressed, including kidney damage.

Bladder or Kidney Cancer: While rare, cancers of the bladder or kidney can cause changes in urine odor and pelvic pressure, among other symptoms.
Tuberculosis of the Urinary Tract: A rare condition in many parts of the world but can cause chronic infection and changes in urine characteristics.
Schistosomiasis: A parasitic infection that can affect the urinary tract, more common in certain geographic areas, and can cause a variety of urinary symptoms including changes in urine odor and pelvic pressure.