thank you for your query.
If the urine test is negative, you are most definitely not pregnant.
However, in PCOS, periods and ovulation are very erratic, so consult your doctor.
You should have proper hormonal assessment and treatment for PCOS, else conception will be difficult.
Maintain an ideal BMI, as even 5 % weight loss
normalizes the cycle.
Also, you might need help of drugs like Metformin
citrate to aid ovulation and conception.
My advice is to consult a Fertility
specialist, and not to waste your time.
be positive,exercise regularly, and eat healthy