Sorry this cycle was a bust for you. Progesterone levels on cd21 test don't really mean anything other than whether you ovulated or not. I've seen ppl get really really high levels who end up not pg and people with as low as 15 or so and end up being pregnant. You just never know :(
I'm sorry that your cycle did not work out. Are those progesterone results? My CD21 progesterone on clomid was 106 one cycle and my RE also thought I might be pregnant, but I was not. Clomid can make it really high, especially if you produce multiple follicles.
Did you take a test? Is it possible that you had implantation bleeding?