How can I regulate my irregular periods to conceive?

After the intercourse if you had periods in March, April, and May, on March 5th, it's unlikely that you're pregnant, as regular periods suggest otherwise.

Your period ends, and you have unprotected sex daily—your chances of pregnancy rise. An egg releases during ovulation and sperm may fertilize it at this time. Early pregnancy signs include missed periods, nausea, and fatigue. To avoid pregnancy, use condoms or birth control pills. Knowing your cycles is key to preventing unintended pregnancies.

Your period's regularity could result from anxiety, hormonal shifts, or perhaps pre­gnancy. Signs might include abdominal bloating, me­nstrual-like cramps, and tender bre­asts. It's wise to be patient, se­e if menstruation begins. If it doe­sn't, consider getting a pregnancy test for de­finitive confirmation.

White and itchy vaginal and anal areas indicate Fungal infection . Scratching causes scars. Consult a doctor for diagnosis.. Over the counter antifungal creams may temporarily relieve symptoms. AVOID tight clothing and keep the area Dry. 

It can be a sign of a vaginal infection, could be bacterial vaginosis or a yeast infection. It occurs due to an imbalance of bacteria or yeast in the vagina, and can cause discomfort, itching, or burning in some cases. I recommend you to get an accurate diagnosis and treatment. Your doctor may give medications like antibiotics or antifungal medication, depending on the cause of the discharge.