Clomid

Susan
Hi, 
​This is my second month of clomid, the first month I took it I didn't ovulate earlier than without it. 
​Can other uses please help, should I ovulate on day 14/15? 
​Also, do the side effects, headaches, hot flushes etc do they subside after a cycle or two? Finding it hard to continue feeling like this. 
​Thank you