Hi Kusum,
From you history I gather that all your investigations are normal.
Except for removal of left
fallopian tube. Your other risk factor is age of 38 yrs.
Tubal
pregnancy is due to some sort of damage to inside of tube, may be infection or surgery etc. Usually if one tube is damaged by infection , other one also s at risk of damage , you never get
cold in one
nostril !!
So no matter what you do, IUI or injections Sperm & egg may not be meeting at all .
Keeping history of failed treatments , History of tubal damage & most important age of 38 yrs, I would advise you to try IVF. Once you reach 40 yrs, your ovaries will not have healthy eggs enough to have pregnancy.
In IVF tube is not needed & pregnancy chances are high.
It is costlier than other methods but has definitely higher pregnancy chances.
Hope I have clarified your query
All the best
Dr.Balakrishnan