Why haven't I seen my period this month at cycle day 43 if I didn't ovulate according to Flo?

Brown discharge before period may indicate implantation bleeding . Wait for missed period and take a pregnancy test .. If positive, consult your GYNECOLOGIST for further advice. 

There is still the possibility of getting pregnant if you have had unprotected sex three days before your period is due. This is because sperm can live for a few days inside the body. Not having your period might be a sign that you are pregnant. If you’re worried, after missing a period you can take a pregnancy test to find out for sure. 

If a period was 11 days ago, and there was unprotected sex around that time, then there is a possibility of becoming pregnant. Symptoms might include missing periods, feeling tired, and vomiting. 

ASSUMING a 28 day cycle, your period is late. Stress and hormonal imbalances can cause this. Take a PREGNANCY test to be sure. If negative, wait a few more days and test again. If it remains negative, see your doctor... They will check for underlying conditions that can cause a missed period such as POLYCYSTIC ovary syndrome (PCOS) or THYROID issues...

A period that's unusual could be­ implantation bleeding. This occurs when a fe­rtilized egg attaches to your ute­rus lining. You may experience­ light spotting, cramps, and period changes. Try taking a pregnancy te­st to confirm. 

What might fit in the picture is yeast infection, which is one of the most common among women. The burning and itching are the two primary common symptoms. The feeling of your vaginal opening getting bigger or wider may be due to swelling from the infection. Antifungal creams or suppositories that you can get over the counter could be tried for this purpose. Don't forget to keep the region clean and dry, and wear cotton underwear to promote the healing process.

It's normal for your periods to become irregular after delivery. Common signs include periods that arrive too early, too late, or not at all. This happens as your body adjusts to the changes from pregnancy. Other factors like spasms, breastfeeding, and hormonal imbalances can also affect your cycle. Maintaining a healthy diet, staying active, and managing stress can help regulate your periods.

If sperm has been in contact with the vulva but no sexual intercourse took place, there is very little chance of getting pregnant. You acted so quickly by popping the "i-pill" that within an hour of the incident you lowered the risk even further. However, it may cause some mild side effects such as nausea, headache, or irregular bleeding.