2 weeks post op Tummy Tuck, my stomach is very hard around my belly button area feels like a brick. Is this normal?

To answer this properly and avoid false reassurance, an examination is needed. Therefore, a call to your surgeon is the right advice.All the best. 

hardening after surgery is a normal response of the tissues to healing. This is due to an influx of healing cells. Over time this will soften again to become normal.