Clomid

My doctor said if I don't start my period two weeks after I got down with my 1st round of progesterone he said he would put me on Clomid in July when I go back. But it's been about 3 weeks and haven't had a period. They are super irregular. I think I wanna call and ask if I can just be put on Clomid. what do you all think? My husband and I have been trying for 10 months and it doesn't help when I have no periods or low progesterone (on my second round of it). We just want a baby really bad and  our daughter really wants a sibling. I'm tired of taking ovulation tests since they don't do crap for me and taking pregnancy tests that just come out negative. makes me sad.