I am 31 years old and I have suddenly started breaking out and my hair is thinning but only at the ends could this be my birthcontrol?

Acne and hair. These may be related to birth control. Hair loss is usually related to nutritional deficiencies or hormone imbalances. Birth control causes many nutritional deficiencies. I suggest you make sure you are taking a good multi vitamin and mineral supplement and follow with your doctor to check you're thyroid and hormone levels. There is also micronutrient testing available.