Hi welcome to health care magic Your gynecologist had done diagnostic laproscopy and found abnormal Fallopian tube with blockage... So your history should be taken for genital tuberculosis... If needed gene expert study can be done for that from tube sample... Let me know you in tubal blockage problem chances of conception is very less and even though conception occurs it is mostly ectopic pregnancy So yes for that your doctor has suggested you intrauterine insemination... That is assisted reproductive technique used when natural conception difficult Take care