PCOS diagnosis

Shanelll

Today I was diagnosed with PCOS after years of knowing the that I had it my doctor finally diagnosed me and has put me on Metformin, and Estarylla. I have a question. I’m 20 years old, I have never been On birth control and never even considered it til now. Is it true you gain weight on birth control? Is anyone else taking Estarylla if so what is the effectiveness for you? What are the side effects for you?