Help

I know this is alot. Ive tried typing it out the best i can. I really need help.My wife is divorcing me. We've been married 5 years and together for 7. She announced it 3 weeks ago. It was a complete bombshell. I didnt know she had these feelings at all. She says there isnt any hard feelings but she has been thinking of this for over a year and she has been feeling us drift apart and stressing each other out and she doesnt want this to end in anger so she says it needs to end now. I had legit panic attacks for the first week to where i could hardly function. Had to reach out for the first time in my life for anxiety and depression meds and they are taking the edge off but giving me weird side effects like the ability to cry. Im in so much pain. This year has been a terrible year. Her dad died in January and she hasnt been handling it well. Ive picked up all the slack in her family because im the only male left. Supporting her mom and doing the things that needed to be done around her house. She has also had extreme pressure from work telling her to go to management becasue they are going to delete her position. She also had to get top dentures 3 months ago because of the cost of repairing the enamel on her teeth and seeking a better alternative like dentures. It turns out she has a gag reflex to dentures and hasnt been able to eat solid food in months. She has lost 50lbs. All this combined ive felt the distance physically and emotionally for months and ive been trying my best to step up and be a superman but to all fail. It finally came down to her saying she wants a clean slate in life and appreciates everything ive ever done for her and the kids but she is ready to move on. We have 2 kids together from her previous relationship that have only ever known me as father. She doesnt want them out of my life even though there are no legal obligations that protect me on seeing them. She wants to leave me our marital home and wants me to refinance witch i can. But the memories are so intense. Everything is so intense everyday right now. She wants an uncontested divorce and plans on moving all of her and the kids things out of the house by next week and stating in the paperwork that she has everything she wants and everything left at my address is mine. Im so torn up. She took her ring off a few days ago. Changed her address yesterday and started packing boxes. My house is feeling so scary. Ive never been alone in many many years. Let alone the thought of not coming home to the kids and their everyday life. A silent house. I still have responsibilities to the dogs to be home everyday after work to attend their needs. They are basically my emotional support through life. Her family cannot understand her decision and tried talking with her for the first week or so but it seems her mind is so made up and now they are trying to comfort me and support her however they can. All i have are my parents and brother but they are really consumed by their everyday lives as well. I feel so alone and hurt. She has been leaving everynight until early morning to go see another guy. She wont say it out loud and i really dont want her to but I know it for a fact at this point. There is evidence of it. She claims she is going to friends for support but ive found out otherwise and that hurt resides in my heart as well. Im on the edge of a tipping point in my life and im tottering. Im losing my family unit and for many years now ive dedicated my all to them. I go to work and go home. Thats my life. All ive needed for years to fill my cup is my family and now im so depressed and pathetic that i am barely operating anymore. She is taking this so gradually and calmly and im doing my best to respect her decision because she is not my slave but it hurts that this is happening at all. Im completely blindsided. I cant endure life but im making steps and reaching out in every way possible.