Acne and weight gain with Skyla

I️m 15 years old and I️ just the Skyla yesterday. I️ have moderate acne (no cysts just little bumps all over my forehead). My doctor told me that the Skyla should clear up my acne but I’ve been reading online and it says that the Skyla makes people have really bad acne. I’m also scared about weight gain because I️ tend to gain weight really easily. Help!!