I was trying to help build a porch tried to pick up floor real heave next day pain in chest and hard to take air in is that normal?

Yes: Yes a muscular strain of the chest wall can cause difficulty with taking deep breaths. As muscles need to contract and relax during breathing, strained chest wall muscles would cause pain on inspiration. However if you are finding that you are short of breath or gasping for air then there is always a concern of pneumothorax or collapsed lung. In this case you need to go to ER to get a Chest X Ray

Abnormal - muscle st: Most likely, you have a pectoralis muscle strain, which is a strain on the muscle from the chest to the arm. The pectoralis ("pec") muscles are used in lifting objects, but heavy objects (like in construction) can overburden the muscle, leading to fraying of fibers & inflammation near where the muscle & tendon meet. To treat: rest the arm, ice, & OTC pain relief (Acetaminophen) if you are healthy