Having sharp chest pain happens more when laying on left side or using left arm.echo and chest ct clear also having night terrors.high wbc help please?

Chest wall pain: Sharp pains That are persistent are most likely related to chest wall irritation the cause of which is usually unclear. But it is benign.In some cases however it can be shingles even in the absence of a rash. The presence of elevated WBC makes one wonder if this may be your case. Take Tylenol (acetaminophen) or Advil and watch

Not to worry: Sounds 100% muscular given that you can reproduce the pain with change in body position. Elevated WBC count can mean infection. I don't have the luxary of seeing your bloodwork, so hard to comment. Stress can sometimes increase it as can inflammation, which may be related to an injury. Night Terrors could also be from stress or anxiety too. It's too vague of a symptom. Given your young age