What should be my next step for prolonged cough diagnosis?

[redsleek]

I have had some cough past 2-3 weeks. Initially I was coughing with some throat pain for a few days but later I don't have pain, just prolonged cough. I saw urgent care and they gave me prednisone, azythromycin, hyrdromet and benzonatate. My cough hasn't gone completely yet - just low level and my legs have been achy.
I have no fever, no nausea, no vomitting. 2 docs I saw in 2 weeks said my lungs are clear.

Both my parents went through cancer so I am terribly concerned of underlying conditions. What should be my next steps?

[Franc12]

Although having parents that went through cancer put you on a higher risk in getting one, it is not enough to conclude that your cough has any relation with it. It may be said the cough is also a symptom of a lung cancer but it is a prolonged one. It has only been for a few weeks try giving it more time. If it still persists consult a doctor.

[Caryopteris]

If you don't want cancer, don't use prednisone.  To help your cough, use mint tea, bone broth, Nigella sativa, hemp oil, things like that.  For your body ache, take magnesium citrate (use another form if you can't have your bowel movements speed up) and zinc gluconate to help get over a cold virus.  

[redsleek]

yeah.... didn't know magnesium citrate is also for body ache. I will take Calm tonight.