Abdominal pain 22 days after abortion may be related to incomplete abortion, pelvic inflammatory disease or urological diseases such as urethritis, gastrointestinal diseases such as appendicitis and other reasons. 1. Incomplete abortion: In the process of abortion, part of the embryonic tissue remains in the uterus or there is blood accumulation in the uterine cavity, which can cause abdominal pain after abortion. 2. Pelvic inflammatory disease: If the residual tissue exists in the uterine cavity for too long or there is improper disinfection during the operation, the pelvis can be infected, causing abdominal pain, which requires timely removal of the uterus and anti-infection treatment. 3. Urological diseases: such as cystitis, there can be urinary tract irritation symptoms of urinary frequency, urinary urgency, urinary pain, there can also be lower abdominal pain, some patients have difficulty urinating. 4. Gastrointestinal diseases: such as appendicitis, there may be pain in the right lower abdomen or nausea, vomiting and other symptoms. Abdominal pain after abortion is recommended to go to the hospital in time, improve blood or urine HCG test, ultrasound or CT and other related examinations, clear diagnosis, and targeted treatment.