Respected Madam, hi I evaluated your query thoroughly.
*Pulsations in forearm and abdomen are Physiological due to body`s
adjustment in view of athlete activities , it`s not pathological.
Nothing to worry dear keep on running , keep your hydration levels, BP
under control.
*So far as low
heart rate is concerned you must have undergone work up for
the same but details are not available here to comment.
*For the ailment of
constipation , adequate water , liquids intake , high
fiber diet, avoiding much oily / spicy / nonveg stuffs.
*Painful menstruations are related to
hormonal imbalances , antispasmodics
at times and if required
Ultrasound of the pelvis to fix the cause.
Hope this rectifies your query.
Thanks for using Health Care Magic and viewing my answer carefully.
Regards.
Wishing you a fast and speedy recovery from the same.
Take care Dear Bye.