Your guess seems right on track, and based on your symptoms you might want to be evaluated for possible polycystic ovary syndrome (PCOS).
You might want to start with your general practitioner who will be able to arrange for a physical exam, some basic and diagnostic blood tests, as well as a pelvic ultrasound. In Singapore, endocrinologists and gynaecologists most commonly manage PCOS.
If your symptoms and acne are indeed due to the above hormonal issue, management with lifestyle changes such as weight management, with or without oral contraceptive pills, can be of good use.
Hope this helps!
Best,
Shane
