has anyone had uterus biopsy, sonohysterogram or HSG? These are some of the tests I will be likely getting to see about the miscarriages and spotting.. im really worried because I don't know what they are or what to expect - has anyone been through these? any info you can give me is much appreciated.

i've googled, and now i am sooooooooooo scared.. can anyone give me any more info? personal experiences etc