When you start taking the contraceptive pill, there’s something you should know: it won’t protect you right away. It takes about seven days to start working. While you’re waiting for it to kick in, make sure to use an extra form of protection such as condoms so that pregnancy doesn’t occur. Some people may get mild side effects like headaches or feeling sick when they first try this type of birth control but these usually go away with time if taken properly. 

Changes in menstrual blood flow can be influenced by various factors, including hormonal imbalances, medications, stress, changes in weight, or underlying health conditions. Since you mentioned using medications for skin allergy,

PCOD can bring about irregular periods, and thus, it may be challenging to predict ovulation. Your ovulation time is the same as your honeymoon this is what I will suggest: use ovulation predictor kits for the purpose of recording your fertility period. These can help you masculinize the woman and find out the day she is likely to conceive. You should still keep taking your folic acid supplements as they are one of the most important things for a successful pregnancy. 

It's important to prioritize the health and safety first and so i recommend you to consult your gynec for your particular case. 

You can wait a few more days before considering a blood test for pregnancy. Home pregnancy tests detect pregnancy hormones (hCG) in your urine, but the levels might not be high enough to register immediately after a missed period.

You can use cotton undies, sometime synthetic material may cause itching.
Discharge may be regular discharge due to ovulation.

After a miscarriage it is generally recommended to wait until you have fully recovered physically and emotionally before resuming sexual activity. It is suggested to wait until any bleeding has completely stopped, and your menstrual cycle has returned to normal.