I wonder whether taking a month off completely is possible for you. I'm thinking if you had a period of total rest, no weights or aerobic activity, just walking as exercise and lots of sleep it might help, it sounds like your body is struggling to cope physically. I can identify with the restricted sinuses and puffy eyes at night. Take one day at a time and don't be too hard on yourself, try and find something to look forward to however trivial, keeping a positive mind is hard but is a weapon in dealing with this.