Transvaginal scans may not be mandatory during pregnancy. They may be given by your doctor for conditions like ectopic pregnancy, vaginal bleeding, or upon suspicion of certain medical conditions. If you have more doubts, you can visit your gynecologist.

The information that you shared is such that I can't tell between the loss of virginity and residual menstrual blood as the causes of bleeding. It requires a gynecologist examination to rule out any underlying medical conditions. 

You should go to a gynecologist for careful evaluation and proper advice on the contraceptive method that will suit you. The improper use of any medication may cause your health to deteriorate and suffer.

The vaginal soreness may have numerous causes e.g. infections, wounds, or irritation. As you are sexually active, see your gynecologist each visit to decide if you may have any STIs present.

It is vital to realize that pain during sexual activity is not the normal one and rather may indicate an underlying medical issue. I suggest that you see a gynecologist or a female urologist to talk about your symptoms and undergo a comprehensive physical exam. 

A negative pregnancy test but with a period that is delayed can be inflicted by various issues like stress, fluctuations in weight, hormonal imbalances, thyroid problems, or certain medications. It is wise to see a gynecologist who will give you an accurate diagnosis and treatment. 

I urge you to consult a gynecologist on this matter. It is advisable to take emergency contraception no later than three hours from the time of unprotected sex. On the other hand, injections for toilet infections reduce the working of the emergency contraceptive pill. 
 

It would be good to find a gynecologist and seek medical care if your periods are missed. They can be caused by stress, hormonal imbalances, or pregnancy. It is also vital to hold a talk with someone trusted like a counselor or adult about that experience. 

Please keep in mind that skipping a period may occur for different reasons including stress, hormonal imbalances, or pregnancy. To address your problems, it is better to go to a gynecologist who can do a complete checkup to have a proper diagnosis. 

This can be a signal of a mons pubis infection. It is necessary to consult only a gynecologist or a skin specialist to get a proper diagnosis and treatment. Neglecting the symptoms might cause other problems.

If you are having missed periods for more than a month and if the result of the HCG test is negative, the reasons may vary, including, stress, weight fluctuations, hormonal imbalances, and some medical conditions such as PCOS. Gynecologists are advised to be seen for an accurate diagnosis and treatment.

Bleeding related to cesarean delivery is a common occurrence and can last up to 6 weeks. On the other hand, if the bleeding persists for 8 weeks after childbirth, you need to see your gynecologist. They will look you over, and then assess you for problems that require treatment.

You should visit a gynecologist to get the guidance. The causes of delayed periods could include many factors such as stress, hormone imbalances, and diseases. 
 

An enlarged uterus with a small gestational sac may suggest either a probable miscarriage or an ectopic pregnancy. It will be right to visit a gynecologist urgently for the accurate cause and timely treatment.

It is not unusual to notice the size of your breast fluctuate due to hormonal cycle changes. Lumps or masses in the breasts may not always have to be the same size but in case of a sudden change, this should be reported to a gynecologist or a specialist in breast disease as a precaution against any underlying disorders.