It's really sharp stabbing pain and it's hard for me to breathe. What does that mean

Normal, no? Normal is healthy and no pain, or normal for someone with breathing problem, or normal for my 90 year old neighbor ?

Could be indigestion, could be asthma, could be serious issue with heart or others.

First guess (just a GUESS) would be heart, and that needs immediate attention.

What does it mean? It means you go to your doctor!