Hi, thanks for asking in Healthcare Magic. Pelvic inflammatory disease (PID) is the inflammation of upper genital tract including fallopian tubes and ovaries. The acidic nature of vaginal secretion and the downward ciliary movement in the cervical canal prevent the entry of infections in to uterus. this protection is lost during curettage done for evacuation in abortion and that is why you were prone for infection. Most common cause of PID is sexually transmitted diseases (STD) by gonococcal and chlamydial organisms. These usually travel in a piggy back fashion along with sperms. The chances of STD in your boy friend should be ruled out as you have got the infection within 4 hours of intercourse. Cervical and high vaginal swab culture, urethral swab culture, hemoglobin level, leucocyte count and ESR needs to be investigated for clinical diagnosis. Antibiotics like Erythromycin, Cefoxitin or Tetracycline will prevent further spread of infection. To prevent the involvement of fallopian tubes it is important to start antibiotic therapy at the earliest. Analgesics like Ketoprofen or Ibuprofen will control the pain. I hope this is useful to you.