By the symptoms you mentioned, it may be acultureflux or gastroesophageal reflux disease(GERD). I would recommend you to see a gastroenterologist for an extensive diagnostic procedure.
 

If you have finished a full course of doxycycline for chlamydia and a negative result on testing for the infection, it is generally safe to have sexual intercourse again. You should go see a gynecologist or a urologist for a comprehensive approach and recommendation on safe sexual activity.
 

Heart failure is a lethal disease that needs appropriate treatment. Treatment might include a combination of lifestyle alteration, medications and sometimes surgery. If you are suffering from symptoms like breathlessness, exhaustion, or swelling of your legs please contact a cardiologist. 

According to the given symptoms, it seems to be that the individual has muscle fatigue and pain due to inadequate vitamin D. It is recommended that you also see a rheumatologist.

The brown coloration of the toenail may mean subungual melanoma, which is skin cancer in the nail bed. It is essential to see a dermatologist or even an oncologist for the right diagnosis and treatment.

It will be your OB-GYN who will figure out the exact date when conception took place. She will provide further guidance during your pregnancy. It is of crucial importance to see a competent specialist, if there is any question of a problem related to pregnancy.

It is critical to have any swelling on the pubic region reviewed by a dermatologist if ever sighted. Without looking at the swelling, it is impossible to know what it can be. 

A random pink lump adjacent to the pubic area could be an ingrown hair or a cyst. It would be wise to have it checked out by a dermatologist or a gynecologist to rule out any other disorders.
 

Missing periods can be caused by several issues ranging from pregnancy, stress, weight changes, hormonal changes, and certain medical conditions. It is important to go to a gynecologist who does a comprehensive physical examination to establish a conclusive diagnosis. 

If your menstrual bleeding continues for 15 days, it is pertinent to visit a gynecologist without further delay. This may be the symptom of more serious health issues, e.g. fibroids or endometriosis.

Seek medical consultation from a specialist in case of any infertility. These may include endocrine problems as well as congenital tract obstructions. The fertility specialist can examine you and prescribe treatment options accordingly.

I recommend you to do not depend on such claims made by non-professionals. Testicle injury-induced hormonal imbalances and fertility problems require an expert urologist who treats this type of ailment. Masturbation is unrelated to testicular health and should not be perceived as a way of checking or improving it. 

I recommend you to see a gynecologist or a reproductive endocrinologist for consultation. They will be able to find out the reason for your wife being infertile and will offer different possible solutions. If it comes to egg concerns, then the fertility doctor can recommend some assisted reproductive techniques such as egg donation or IVF. 

These symptoms could indicate early signs of pregnancy. It can only be diagnosed medically through a pregnancy test. It is advisable to go to a gynecologist to have a proper diagnosis and counsel regarding prenatal care.

These symptoms suggest that the liver is damaged and medical assessment by a gastroenterologist should be carried out on an urgent basis.