Could I be pregnant if I had unprotected sex right after my period ended and it's been 7 days without a period?

Precum some­times carries sperm; if it touche­s the vaginal area, pregnancy may occur. Cleaning the­ area after contact helps too. A small chance­ exists, so taking precautions is wise. Though unlike­ly, that pre-ejaculate fluid could le­ad to conception. Protection and hygiene­ minimize the risk effe­ctively.

Yes, it can cause high birth weight and increase the risk of jaundice and respiratory distress syndrome.

It's quite common to undergo a period discharge in white color after your period. It may be your body's self-cleaning method. Yet, if the discharge has a potent stench, is thick and lumpy, or triggers itching or burning, it might be a symptom of a yeast infection. These infections are generally treated with over-the-counter medications such as antifungal creams or suppositories. The use of water and cotton underwear that can breathe easily as well as drinking is the key to your body healing faster.

No, TB tests and X-rays are not the methods used to detect pregnancy. 

Pain in the breast while breastfeeding is very common and may be caused by lactation mastitis or milk duct blockage. It is good to see a gynecologist if pain persists, it might be a symptom of a more serious condition. Hence, I advise you to visit a gynecologist or lactation consultant for the right diagnosis and treatment.