NT Scan Results: 4.21 mm at 3 Months Pregnant

In my opinion, you need to consult a gynecologist for detailed diagnosis. Breast pain on the left side may arise from different sources such as breast infection, injury and inflammation. Prompt diagnosis and treatment is necessary to prevent any complications. If you have any concerns, do not hesitate to see a doctor.

This is a common side effect of Plan B; nonetheless, there are some cases when it might also cause bleeding. Sometimes, the pill may alter your menstrual cycle and then you'll get the annoying bleeding. But, if you have heavy bleeding, severe pain, or feel dizzy, you must consult the doctor about this. Make it a habit to drink plenty of water and take proper amounts of rest. 

It could be because of many reasons like stress, thyroid, hormonal imbalance. Talk to gynecologist for thorough evaluation

It is good you took the eme­rgency pill like Unwanted 72 soon afte­r the unprotected se­x. The pill works great when take­n within 12 hours. Taking it quickly means the chances of ge­tting pregnant are low for you. You do not ne­ed to take another dose­. Keep an eye­ out for any odd signs like feeling sick or te­nder breasts. But know that the e­mergency pill is only for times like­ this, not for regular use as birth control.

It could be due to digestive issues like gas, bloating or constipation. But contact your gynecologist if pain pesists and goes higher up to the chest, when it could be because of high blood pressure.