If I missed 2 and 1/2 days of work because of a job related injury do I get compensated for those days I didn't work?

Probably not.  Under Pennsylvania Workers’ Compensation Law, an injured worker is entitled to wage loss benefits after a seven day waiting period.  It is important to understand that this “seven day rule” does not require full days and doesn’t require the seven days be missed consecutively.  For example, if a work injury causes someone to attend physical therapy sessions and to miss 30 minutes of work on seven different days, that worker may be entitled to wage loss benefits on the eighth day.  Conversely, medical benefits are payable from day one and the WC insurer will have to pay for all treatment that is reasonable, necessary, and causally-related to the work injury. Keep in mind, I am a Pennsylvania Workers Comp lawyer so my answer comes form that expereince.