What causes hearing a heartbeat/pulse rate in your head and ears? its more present when you are walking about or in a quiet place? i currently have a prolonged period which i am treating can that be the cause?

If the sensation is a steady beat you're experiencing pulsatile tinnitus. It's usually not a serious issue but sometimes it's associated with high blood pressure or increased pressure within the brain. If it doesn't resolve after a prolonged and/or heavy period, I recommend having an evaluation& being advised by an ENT specialist & having your blood pressure checked. Also get checked for anemia.

Being aware of the pule in your head and ears is common during exertion, anxiety etc and in not necessarily indicative of a heart "problem". However if you have had excessive blood loss and have become anemic as a result this could be an explanation. Strongly suggest that you consult a gynecologist for further guidance. Good luck.