Cough not goin go away spat up blood once wheezing popping in throat when swallowing and crackles, never smoked. goin on for a while. lung cancer?

Consider GERD: Chronic cough can be caused by chronic lung infection, cancer, asthma, gerd and cardiac condition.

Unlikely - go c doc: It's very unlikely (although not impossible) for a 20yo to have lung cancer. However, it's important that anyone with a persistent bloody cough & wheezing get evaluated for a possible pneumonia or some other such infection.