Am I putting myself at a even greater risk if I call the cops?

My boyfriend beat me badly last night and has been holding me against my will since. He gave me my phone back after taking it but I’m still afraid to contact 911 because I know they will knock and announce themselves and when they do he won’t open the door and will just finish where he left off last night just because he will be upset that I called them. I’m afraid the police being right outside the door won’t stop him
Am I putting myself at a even greater risk if I call the cops?
Post Opinion