Disturbed thoughts and paranoid. Help!

I've taken counselling earlier for some personal issues a year ago. Currently Im struggling with my emotions and Im unable to focus on anything. Im continuously scared and I start crying like I fear death and its going to affect me in some way. Because of the stress Im unable to concentrate on work and I've not been able to unpack the way I feel to anyone. This started in 2019 December when I my brother met with an accident and nearly struggled to survive. Since then I've been scared to do anything like I cannot let my parents out of my sight as I think Im the only one that can protect them. My work involves a lot of travel and while im not at home all my mind could think about are the negative things that can happen to them. I feel scared to even get out of my house and my boy friend left me on Feb' 20 and everything together makes me scared. I cant go anywhere I sit at home and work and Im still worried on how I could protect my family and make sure that they wont leave me. Need Help