advise

Tara
I'm on my first cycle of clomid after almost 3 years of TTC. Dr said I wasn't ovulating after tons of tests so we started assisted fertility. My cycle is a very regular 28 days. I'm on day 31 with no AF. Progesterone level on day 25 was 21.2. All the pregnancy tests are negative (no faint line at all). Dr office says to wait a few more days and tests again. I'm feeling cramps low and all around. Any thoughts or advice. 
Other symptoms might be due to meds and prenatal vitamin. 
Nausea & loss of appetite