<s>[INST] my endometrium echo complex appears is 13 mm in maximum thickness normal pelvic pain [/INST] Hello. Thanks for choosing HealthcareMagic forum. Endometrial echo of 13mm is normal and this thickness determines the amount of bleeding you will have during your periods.This cannot cause any pelvic pain. The pain you have might be due to chronic pelvic inflammation which can be corrected by good antibiotics. Dr. Rakhi Tayal drrakhitayal@gmail.com </s>