Talk to Gynecologist on Infertility

Dear doctors !! I am suffering infertility have mild pcos and normal hormones and according to Dr's I am facing unexplained infertility. I have done all hormonal and blood test, but there is a test known as PCT which is basically performed after intercourse to check cervix mucous and I have seen its not common what is the reason and if I want to do is there any clinic who can perform this test for me.