Thanks Beaglemom.
Apparently my excitement was unfounded. Supposedly only oil-based contrast has been proven to increase fertility. Since I'm allergic to iodine and has to request an iodine-free contrast, it will not be oil-based
"...pregnancy rates after the use of oil contrast have been reported to be significantly higher than rates after water-based contrast,13 and decreased time to conception has also been reported.6 This is particularly so in cases of unexplained infertility. It was presumed that this effect is the result of dislodging intraluminal debris or disrupting minor degrees of perifimbrial adhesion."
https://www.glowm.com/section_view/heading/Tests of Tubal Patency/item/322