Procedure to open fallopian tubes?

PLEASE HELLLP

My gyno suggested I get a procedure done that goes in through the vagina & Into your fallopian tubes to see if they are blocked? It's a small tube that's inserted & releases ink into the tubes & take an xray. I have been trying for almost 2 yrs & unfortunately the reason I might have to do this is because I contracted chlamydia & didnt know I did for possibly a yr. She said any STD can scar & damage your fallopian tubes especially if it's not treated right away. So she sent out the authorization to my insurance & she told me that my insurance doesn't cover infertility treatments & I would be denied, therefore I had 6 months to try on my own again with all the advice & later I had the choice to pay cash for the treatment. She also told me she did the treatment herself & that it was painful & they use a weight to prop your vagina open & that she would still reccomend me do it IF the insurance happened to cover............

& bam today I got a call from my insurance telling me I got approved!!!!

WTF! I'm scared what do I do ? I need advice please! who's done this procedure & what was your outcome ? who would do it?