Hi,Maria ! Thanks for your questions ! And i will be happily to help you. Yeah, Endometriosis will damage fallopian tubes, almost 40% of women with infertility have endometriosis. Inflammation from endometriosis may damage the sperm or egg or interfere with their movement through the fallopian tubes and uterus. In severe cases of endometriosis, the fallopian tubes may be blocked by adhesions or scar tissue. Fuyan Pill is the medication for eliminating inflammation, killing bacteria, clearing heat and promoting blood circulation. It can unblock fallopian tubes in three months. The pills are made of Chinese herbs, which are safe and effective, with no side effects. I suggest you take the pills for 3-4 months to get a cure. Hope my answer will help you,if you still have any questions,pls contact me online by livechat or by emails herbalistlee@yahoo.com. Regards