Hello K...I'm sorry for your sadness. You've found a good place for support from folks who care. Your loss of a 7 year relationship is devastating, I know. First of all, have you seen a medical doctor for your symptoms? They sound like they are stress/anxiety related, but a check-up would be wise. Perhaps your PCP could refer you to a counselor. It has helped me tremendously to have someone to talk to in confidence. It sounds like you are suffering from situational depression. Do you take anti-depressants or ant-anxiety meds? Those in conjunction have literally been life savers for most of my adult life.
You're not alone any more. HUGS~~Dixie