mental health, UK. help!! in crisis!

I suffer EUPD (emotionally unstable personality disorder) is an asap etc of bipolar. I'm currently having a melt down... I've lost my home and I'm on my own with a 8 month old son. I have a social worker and a mental health worker. My son was being looked at to be put into care if I couldn't manage my mental health but my mental health worker said I've been doing great. Last 2 days everything has been going down hill and I'm suicidal again. I want to get help but I'm scared if I speak up my sons going to get taken away from me and I won't be able to do anything to prevent this. Anyone have any ideas how I can cope or handle this?