Struggling with Self Harm and Substance Abuse

Alright I’ve been spiraling. Ive gained 20 pounds, i need to get help for my drinking problem and i self harmed for the first time in years two weeks ago. I regretted it and whenever i see it on my thigh i think that i don’t recognize myself anymore. My question is as an adult will my therapist do anything if i tell her about the self harm ? Will she want to send me to the psych ward or contact an emergency contact because she feels I’m a danger to myself? This is definitely something i need to talk about but i worry what will happen if i do.