Char I think the tests you had were to see why you were miscarrying.
Arcanegirl when you first start to have investigate testing, they start with blood tests which are mainly looking at your hormone profile. Such as:-
* Follicle Stimulating Hormone (FSH) - Done on Day 3
* Estrdiol - Day 3
* Luteeinizing Hormone (LH) - Usually taken at ovulation
* Progesterone
* Prolactiin - Can be done on any day
* Thyroid Stimulating Hormone (TSH) - Any Day
* Testosterone - Any Day
* Dehydroepian drosterone sulfate (DHEAS) - Any day
It is only if all these tests come back normal that they start to do more invasive testing, such as a HSG or Laparoscopy etc....
Hope this helps.