How much delay in periods is normal?
If next cycle starts from 28 +/- 7 days from the first date of last menstrual cycle then it is considered a normal cycle.
Progesterones can be taken in few doses to induce periods but keep in mind that it is hormone pill with few side effects. So, it is better to not self medicate and consult with a doctor for prescription.
No, it is not normal to skip periods for 3 months. You need to consult a doctor to get detailed evaluation to know the cause.
Vaginal discharge or leukorrhea occurs through the menstrual cycle and is usually white before & after the period. Discharge may start out as thin liquid before the time of ovulation. During ovulation, the discharge thickens and becomes mucus like. After ovulation, i.e., in second half of the cycle, discharge increases usually.
No, irregular periods are always due to some underlying conditions such as stress, weight gain or loss, uterine polyp or fibroid, endometriosis, pelvic inflammatory disease, PCOS, premature ovarian insufficiency, thyroid disorder.