I'm so sorry you're going through this devastating experience. It's completely understandable why you feel like no one understands the depth of your pain - it's a unique and profound hurt, and the silence and solitude can be deafening.
You've done the right thing by reaching out here; it's a brave step to seek out a space where you can vocalise how you feel without judgment or criticism. It's okay to be angry, hurt, and overwhelmed by it all - your emotions are valid, and it's important that you have an outlet.
The beginning is the hardest; the sharp edge of pain is excruciating, and the thought of enduring it indefinitely is petrifying. But with time, that raw intensity does lessen, even if it doesn't seem like it now. It's cliche, but healing really does happen, even if it's imperceptible at first.
You're not alone in feeling like an imposter by having to put on a brave face; many of us have been there, too. It's exhausting keeping up appearances and putting a positive spin on things when inside we're screaming. This is a safe space where you can drop the façade and acknowledge the difficulty - your feelings will be understood here.
You'll get through this difficult period, and future you will look back on present you with pride for getting through it. You've survived, and you'll continue to do so - every day, hour, minute, is a step closer to healing. Take care, and stay connected with us.