HSG tomorrow and I'm nervous

I'm a bit neevous for my HSG tomorrow. I have to go alone because my husband has to work. I know almost nothing about the procedure. I know that it's a dye to look at my tubes that they will be filling me with. I hear it's painful. I'm determined to know if my tube was damaged with my ectopic I had this past summer. Any advice would be appreciated. Thank you! Love and dust to all!