Had dnc on 4 mar - got my period on 16 apr - mild spotting till today - can i get my hsg test done even while spotting?

Call the clinic: Clinics have different protocols. Some do not want you to be on your period. Call them. I'm sure they get that question a lot.

Yes: Hsg levels should have fallen or be dramatically falling by this point unless there was an inadequate dnc or an ectopic pregnancy. Would not want hysterosalpingogram at this point for fear of pushing blood into the peritoneal cavity. Not sure why hysterosalpingogram is indicated.