The endometrium is the tissue that lines the inside of the womb (uterus). Endometriosis is a condition where endometrial tissue is found outside the uterus. It is trapped in the pelvic area and lower tummy (abdomen). In endometriosis displaced endometrial tissue continues to act as it normally. It thickens, breaks down and bleeds with each menstrual cycle. Because this displaced tissue has no way to exit your body, it becomes trapped. In general, the bigger the patches of endometriosis, the worse the symptoms Symptoms are- Irregular bleeding Painful periods Painful sex bleeding in between periods etc I will advice you to go to your consulting doctor he/she will do pelvic exam, ultrasound and laparoscopy to identify underlying condition and treatment will be started accodingly Hope i have given satisfactory answer to your question Regards