Hi, although i am the last person to advise on this, you need to realise that your health should be your priority, and not just realise, but make it so. Work will go on without you, and while money is important it doesn't mean anything without your health. I have recently been through some trauma and a big bereavement when my daughter died, and it has really made me realise that while work has always seemed very important to me, i really really don't care about it now, and they are managing quite well without me!
My advice would be to take some time off sick now - not just a day, but ask the GP to sign you off for a period (perhaps 2 weeks?) while you start to sort a few things out