150mg CLOMID!!

Monica
Ok so I was on 100mg of clomid for 2 months 1st month worked 2nd month did not work. I didn't ovulate or have my cycle last month so today the dr called side to take 150mg of clomid. I kinda scared I'm not on my cycle so why would they want me to just start taking the meds. Anyway I'm really looking for feedback.