1st round clomid success?!

Stephanie • 24 years old. Married 4 years. TTC baby #1.
Starting my first round of clomid this week!! 11th month TTC. 50mg days 5-9. Progesterone labs last cycle showed 7.5 and had a HSG prior to that. 
Would LOVE to get twins! (One baby would be amazing too!) any success story's on 1st round? Side effects?! Thanks ladies