Really late with clomid; negative pregnancy tests

So this month I did a round of clomid with a HCG trigger shot. My period was suppose to come the 9th and I still haven't got it. Negative home tests and blood hcg test and my estrodiol and progesterone levels are low as if my period started. I have an appointment Friday with my doctor to see what's going on because they don't know. Anybody else have this happen to them? It is driving me crazy 😩