Hysteroscopy!!! Help!!!

I have planned hysteroscopy on monday, without any pain meds, due to excessive bleeding. Is it painful? I have given birth twice and I'm in lots of pain since (almoust 5months). I am terrified 😱 i looked up what it is and how it's done and now I don't want to go as I am so scared.. i don't even want to find out anymore why I'm losing so much blood