Can I call in sick to work for mental health.

I’m so scared I will get in trouble but I’ve been suffering, and I feel like I need to seek some advice from a doctor or hospital. Every day I cry my self to sleep and wish I wasn’t here anymore some days and some days in work I have to go out for a break as it gets to much. I work in a call centre so it’s busy calls all day and annoying customers. We had coaching yesterday and he made me cry and made me feel stupid for being upset and told me to deal with it. I’ve never felt like this in life. Like I wanted to give up with everything like a constant headache. I can’t face work today but I’m scared I will get in trouble