Your experience is pretty typical. Most REs & clinics still aren't believers in testing & treatment, even for women with a history that suggests it might be prudent.
Most women have to seek out immune issue friendly clinics or go to a reproductive immunologist. I did both, first switching from a mainstream clinic that refused to help me search for more answers to an RE who tested & treated immune issues. I then switched to an RI to test & treat immune issues, which finally did the trick.
It's not an easy path, so your experience is not out of the ordinary at all. It's for the best, though, that you find someone to consult with who knows the area. Sometimes helpful doctors who aren't versed in the issues will agree to order the testing, but then when it comes to interpretation & treatment, either they can't help or what they can offer isn't enough.
My very 1st NK assay was run by my ob/gyn's office, as the kind NP was willing to help. But then the office couldn't interpret the results & neither could I. I then had to find an RE, which I did, & it turns out the test that was run wasn't one he could do anything with (it was not an NK assay geared for reproductive immunology). So I was back at square one.
Anyway, that's a longwinded way of saying that yes, it's pretty normal, but it's usually for the best that you seek out a specialist. If not, there are even more pitfalls & this is not an easy thing to explore under the best of circumstances.