Hsg and still bleeding 4 days later

Sa
So I had the hsg done on Tuesday. It hurt incredibly bad although they said all was normal. 
Anyways my concern is that I'm still bleeding 4 days after. They said there should only be slight spotting maybe a couple days after. And I have another test next Tuesday and they deff can't go in there the way she is :/ anyone else has this done and bleed this long