Do I have to testify against my husband if I’m victim but he’s mentally ill and I do not want him to be prosecuted, just given some help?

I was hit and I didn't call police. He left the house so did I to go to the ER because I couldn't breathe. He appeared back to the outside of house and seemed weird and saw an officer in his vehicle and asked him to escort me in my house and my husband was then arrested.