Missing your period for 18 months indicates you are likely not ovulating, which directly prevents pregnancy. However, this is usually a symptom of an underlying issue (like PCOS, hormonal imbalances, or thyroid disorders) rather than permanent infertility. Once the root cause is treated, your fertility can often be restored. You should not self-medicate. Fertility medications like Letrozole or Clomiphene can induce ovulation, but they must only be taken under strict medical supervision. Please consult a gynaecologist or fertility specialist. They will perform hormone tests and ultrasounds to determine the exact cause and prescribe the correct treatment to help you safely conceive.

To help you conceive naturally despite the recurrent cyst, your doctor may recommend: 1. Letrozole: An ovulation-inducing medication often preferred over clomiphene in endometriosis, as it helps grow eggs while keeping estrogen levels controlled. 2. Short-term GnRH Agonists: Medication to temporarily suppress estrogen, which can shrink the new cyst and reduce pelvic inflammation before you try conceiving. 3. Antioxidants: Continuing supplements like Coenzyme Q10 to support egg quality. Since endometriosis can affect egg quality, closely tracking ovulation is key. If natural conception is delayed, consulting a fertility specialist about advanced treatments is a highly effective next step.