So sorry you've had a rubbish day OP. If the downer is intolerable (which it sounds like it is, as you're posting here) I'd try to get an out-of-hours GP appointment for Monday if you can. In the meantime, take care of yourself and just do what you can to keep things as peaceful as possible - practice some mindfulness, eat your favourite things, curl up with a favourite film or book... and just remember it's only temporary. My first month on fluoxetine was unbearably low but it lifted when I switched to citalopram - it's often just a case of working out what works for you.,