If a medication or a medical condition is the cause of constipation, eliminating the offending medication or treating the underlying medical condition may relieve the constipation. However, certain conditions require the use of a medication despite its side effects.
Your heartbeat can be either tachycardic or bradycardic during a heart attack, so no i don't believe you had have a normal pulse rate at the time of a heart attack, normal being around 60-70 beats per minute for an adult. Heart rate does decrease though with age but that doesn't necessarily indicate anything is amiss.
A normal heart rate-about 60 to 100 beats per minute. Your heart rate can increase beyond 100 beats per minute if your body needs more blood, such as during strenuous exercise. Some athletes may have normal heart rates below 60 beats per minute because their hearts are very efficient and don't need to beat as fast.