Could The Pain And Sensations In My Head After An Iron Structure Fell On Me Be A Sign Of A Serious Injury?

an iron structure fell on my head and shoulder. since then i have pain in my left side of the head. i feel something like a clot moving above my forehead and the middle of my head when i kneel to pick something from the floor. The pain increases if I carry anything or bend to get something on the floor. sometimes i feel like tissues in my brain are being stretched.