Oh Juan, that feeling of loathing every minute as it took me farther away from DH1 came flooding back when I read your most recent posts.
In all honesty the first few weeks I was in shock, and handling myself much less well than it sounds like you are. I couldn't really speak, from the agony, and I was a total, crumbling mess. Thankfully my wonderful parents moved me and my DC in with them for a few weeks, and looked after us all.
When I pulled myself together enough to return home, YY to everything reminding me of him, and making little changes. I avoided our bedroom altogether - DC and I all slept together in spare bedroom for months.
The loneliness hit pretty fast, and I learned which friends I could send an SOS text to once my DC were asleep. Having someone come and cry with me helped so much. And books - all my oldest favourites - kept me going in between.
I couldn't do TV, because everytime the next episode of something that DH liked came on it was awful. And music that reminds me of him is still difficult.
Another emotion that hit after the initial shock - and it sounds so stupid - was embarrassment that everyone was talking about me. Mixed with anger that they were mentioning DH only in context of his death - not the life he lead or who he was. After a few months the DC and I planned a memorial event to celebrate his life, and especially as I had been in a fog during the funeral, this massively helped us.
I remember on the day we moved back home, thinking, well this is it now. The love of my life has gone, and mine will never be the same. There's nothing for it but to dedicate my life to my DC, and try to be both dad and mum to them. That felt so overwhelming - DH1 and I were together from university and I didn't know if I could be an adult on my own - let alone parent on my own. But I found that I could. And then I realised, gradually, and with the help of a great grief counsellor, that I was wrong anyway and devoting my life to them forever wouldn't be good for any of us. And that death had stolen enough from me - I wanted to work out how to live life to the full again.
I hope that's answered your question a bit. Sorry I can't offer more suggestions for the very early weeks.