17 day post ovulation!

Mandy • 26, love being a mommy & wife!
Today marks day 17 past my ovulation date, af was supposed to start on the 10th. I am extremely exhausted & bitchy, have had icky cramping on & off, but no blood in site. We have been ttc about a year with no luck, and our Doctor suggested I start clomid this cycle. I'm too nervous to take a test & get my hopes up, but I'm also frustrated that I can't start on Clomid if we aren't pregnant. I feel stupid venting, but I truly am so down & out frustrated, it'd be great to get some advice!