I'm Worried About My Husband

My husband got mugged yesterday. They beat him so bad. He said they kept hitting him I his stomach and abdomen with a crow bar. He crawled his way back home, but he won't go to the hospital because he has severe fear and anxiety of hospitals. His mom, dad, and sister checked in and never checked out of a hospital. He seemed to be doing okay today. Just in a lot of pain. He was cooking lunch and I noticed his pants turn dark. I tell him "Babe you're peeing". He look down super embarrassed. He didn't even feel like he had to go. He goes to the bathroom. Five minutes later I hear him say "Babe... I think there's blood in my pee..." I go to the bathroom and he holds up his white underwear. It smells like urine, but the pee stain is pinkish red. I start panicking saying we should go to the hospital. He goes "Lets just see if it goes away. If not I'll go". I don't think this is something we should wait on. Does anyone have any idea what could be going on?

Update: So I forced him to go to the hospital. He peed himself again on the way there. He has some internal bleeding along with bladder damage. I went out to the waiting room so I could call his foster mom to let her know because she was worried. Doctor says I have to go to the waiting room. Im so scared..