Serious acne week before period and at time of ovulation?

Ruth
I get acne all over but mainly on my chin, temples and jawline which I understand is hormonal. Used to think it wasn't but with this app I've worked out that I break out the few days before my period and during ovulation . It's surface stuff as well as really deep sore acne.
​Anyone ever worked out a way to fix this without using the contraceptive pill? I've always had clear skin but since I was 22 it's been getting much worse! I'm 25 now and at a healthy weight, excercise, and eat healthy too!
​So anyone know any solutions or causes for this?