Hi. Welcome to Healthcaremagic
Blocked tubes need to be reopened surgically. You might be getting steroid
injections which help but there is no guarantee. So get the Histerosalpingography or laparoscopy
after finishing the course of shots to see whether they are open. If still not opened get them fixed surgically.
You have chances of pregnancy
with if the tubes are open.
Regards, Dr. Jagdish