the pill gave me acne

Olivia
About 3 and a half weeks ago I started my periods and on my first day began taking Levlen ED (contraceptive pill). It has given me really bad big red pimples that are painful to the touch! These are spread across my whole face! I also have small pimples ALL around my checks that have given me a really bad pigmentation and feel weird. I also have a few pimples on my back.. Mind you I have never had a problem with acne or pimples, I'm 17 and I rarely get pimples, never really have!! I don't know what to do, is there any other brands that anyone can recommend? I really don't want this problem especially since my formal is coming up in 2 months! Thank youuuuuu