I'm 17 years old , have polysticovary syndrome and recently had sex , my period was a week late . can you please tell me what's going on with my body?

PCOS: Polycystic ovaries is not a disease but rather a description of a group of symptoms like weight gain, irregular periods, abnormal hair growth, lack of ovulation, acne and prediabetes. Weight loss can inactivate the hormonal processes causing it. There are many options for cycle control as well as preventing pregnancy. Since you had unprotected sex consider a home pregnancy test and STD testing