I've been having a pain on my heal bone right below ankle. very sensitive to touch what could it be?

Be seen: It sounds like a sprained ankle, but could be other things as well. See your physician for an exam and diagnosis.

Bone bruise or nerve: Heel bone in this area may be bruised from shoe pressure. This may also cause trauma to the nerve. If you are referring to the back of the heel, it may be a spur or a bursitis.

Probably bursitis: Between the achilles tendon and the heel bone is a small fluid filled sac called a bursae. When it endures a lot of rubbing or friction, it will swell and cause pain to the area (bursitis.) see your podiatrist for treatment of this condition.

It depends where : On the heel bone. If the back can have tendonitits or spurring, if the outside part of the bone can have tendonitits of the peroneals, if on the i snide can have tarsal tunnel or posterior tibial tendonitits. So anatomical location helps in giving a diagnosis.