I'll explain likely causes of your weakness and missed periods and whether taking an Omega‑3 (fish oil) capsule with your current vitamins is reasonable.

⚕️ Possible causes of weakness, low energy, and delayed periods in PCOS

• PCOS-related anovulation — hormonal imbalance from polycystic ovary syndrome commonly causes missed periods and can contribute to low energy.
• Nutritional or endocrine issues — despite taking ferrous ascorbate and B12/folate, persistent iron, vitamin B12, or vitamin D deficiency or low thyroid function (Thyroid‑stimulating hormone, TSH) can cause fatigue and menstrual changes; based on your supplements, deficiency is possible but not certain.
• Pregnancy or stress/weight changes — pregnancy can cause amenorrhea; major stress or rapid weight change can also delay menses.

💊 Safety and benefits of Omega‑3 with your current medicines

• Omega‑3 (EPA — eicosapentaenoic acid and DHA — docosahexaenoic acid) is generally safe to take with Vitamin D3 and your B12/ferrous/folate/zinc tablet and has minimal interaction.
• Potential benefits: may reduce inflammation and improve insulin sensitivity and triglycerides in PCOS, but it does not reliably restore regular periods.
• Typical dosing (Apollo Life Omega‑3 Fish Oil 1000 mg) once daily is reasonable; avoid high doses if you have bleeding disorders or take anticoagulants. Take with meals for best absorption.

🩺 Recommendations and next steps

• Start or continue Omega‑3 (1 g/day) after discussing with a doctor, unless you have bleeding risk or are on blood thinners.
• Get basic tests: pregnancy test, complete blood count (for hemoglobin), serum ferritin, vitamin B12, vitamin D, and TSH.
• See a gynecologist and/or endocrinologist for tailored management of PCOS, menstrual irregularity, and fatigue.
• If symptoms worsen or you develop fainting, heavy vaginal bleeding, or chest pain, seek urgent care (Apollo Emergency - 1066).

If you want, I can list the exact tests and target levels or help plan what to show the specialist.