TTC irregular periods Dr says try Clomid??

My husband and I have been ttc for almost a year now. My period has been out of whack since I have been off the pill. I have no idea when I will get it or for how long. My last time I got my cycle was dec 4-8 and skipped Jan and now got it again in Feb! See how frustrating it is? I never know when to track or what to track. My gyno said just to relax and take progesterone and see what happens. He must have sensed my frustration and he prescribed some clomid. Any experience wih it? All the tests they have run say I'm perfectly normal and should not be concerned but it's annoying when literally pregnancy since running wild in my life and I've missed the train :( help and Support pls!!