New at this, can't believe it

I lost my dear husband Stephen last Friday, he was in the hospital for 11 days, we thought things would turn around until the 10th day, he was newly diagnosed with MDS and had an infection due to low blood counts, he was 56 years old, I am 52 and we would be married 30 years in March. I have two grown sons on in medical school and one an architect, who has moved back home and will stay with me until I decide what I will do. My mornings are horrible it takes me most of the morning and a little past noon to start up then the rest of the day is not so bad, until of course. Have a melt down and cry and feel as though I can't move or breath. I miss him so much, we we starting to plan all kinds of empty nest things and we were together so long I'm not sure how to move along without him, I grew up with him. He was the best husband, father, employer, friend, etc. The amount of flowers, cards, baskets, etc have taken over my home, it's great and miserable at the same time. I know it is very soon to feel anything but grief and sadness, but what can I expect to happen two weeks, one month, four months, etc from now. This hurts so bad.