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.
If you are taking Hormone Replacement Therapy HRT you may also be ware of an increase in episodes of heart palpitations at the beginning of your treatment. Menopause heart palpitations can increase your heart rate between 8 and 16 beats per minute.