If your egg quality is poor, then go with IVF PGD. In this case, your embryo will be checked for abnormality before transferring into your uterus.
Egg quality needs to be checked prior to commencement of the infertility treatment whether it is IUI or IVF procedure. It's good that you got all the tests done. Just go for a repeat test for all the parameters associated with positive pregnancy. I also faced such issues. But then fortunately, I conceived with right tests and procedure.