First month on Clomid

Hi everyone! This was my first month on Clomid, 50 mg. TTC #2 and been put on Clomid because I have long cycles (36 days usually). 
Im currently on cd33. I got a positive opk on cd14, my cd21 progesterone lvls were 27.9. Negitive pregnancy test three days ago. I've been extremely tired, and bloated with cramps. 
Does Clomid make anyone else tired? Does Clomid effect your LP at all? Should it have made my LP shorter, longer, normal?  At this point am I out? Doctor called in my Rx for next month and I've already picked it up and I'm waiting for my period. Starting 50mg again because doctor said my lvls seemed good.