HSG test??

Acasia

So my doctor finally did my infertility referral so that I can get pregnant soon. She gave me the number to make an appointment for an hsg test and says its a dye that goes on my fallopian tubes?? She also said I should schedule it 2 weeks after my period but I bleed almost all the time so I'm unsure when to make the appointment.

Can anybody give me more insight on this hsg test and what I could possibly be experiencing when I start my <a href="https://glowing.com/glow-fertility-program">fertility treatment</a>?? Im really nervous it wont work or I wont carry full term and have a healthy baby.