Feel like my dr is rushing the process....

A little background.. I have had 3 pregnancies since last year all ended in mc so we went to a fertility specialist. They found a blood clotting disorder with mine and my husbands genes and that I have mid luteal phase defect. He started me on Clomid 50mg this cycle. I didn't get pregnant and now they are wanting to up the Clomid to 100mg do a trigger shot and IUI... I don't understand why they would jump to that when I have been able to get pregnant on my own without any aid previously.... Any ideas????