I prefer eating healthy food because healthy food is a key to lead a healthy life .
His primary physician would be the most logical explanation. As your doctor is able to assist in these areas of nutrition and over all health of the body.
Some answers could also include dietician or physical trainer.
Yes, the only way to fully prevent getting pregnant is abstinence
After 3 days probably not just take a pregnancy test to make sure.
ACUTE STRESS
It is the most common and frequent presentation. Acute stress is most often caused by reactive thinking. Negative thoughts predominate about situations or events that have recently occurred, or upcoming situations, events, or demands in the near future.