The fallopian tubes carry eggs from the ovaries to the uterus. When tubes are blocked by scar tissue from Endometriosis, due to surgery or infection, the egg and/or the sperm cannot travel through. If a fertilized egg is trapped in the fallopian tube, it results in Ectopic pregnancy, which is treated with medication or surgery. for more info visit here:- https://kiranivfgenetic.com/ivf-clinic-in-hyderabad/