Hi I had undergone hydrotubation an year ago as I had tube blockage on the right side fallopian tube near to the ovary.  After the procedure the doctor confirmed clearing in both tubes. But  later didn't try to get pregnant for a year due to some reasons.  Recently after visiting my ob-gyn she has advised for HSG to check for tubal blockage. So my query is how often is hydrotubation done and how effective is it ? Is there any chance of tubes getting blocked again and should I retake the hydrotubation procedure? Also as I'm trying to get pregnant now, what precautions should I take to conceive ? Thank you in advance.