Hello Andie,
So sorry to hear about your mum. Sending you a welcome hug.
I came here in 2017 after losing my mum too, so if it is any comfort at all, I am still surviving three years on and can honestly say, it has got better. I wouldn't say I am 'over it'. The truth I have learned is that you don't get over it and you certainly never forget or stop loving your mum, but you do learn to accept and live with the loss. I don't feel she is gone. I still talk to her and can hear in my head what she would say to me in situations where I miss having her advice and comfort, but I do sometimes feel she is still around keeping an eye on me and certainly felt that in those terrible early days.
If it is any further comfort, I recall feeling exactly as you describe in those early days after I lost her. Yours is a normal reaction to loss and I found myself slipping into a pit of despair even six months after I lost my mum. I knew I had to try to help myself or I would never be able to climb out of that pit again, so I found little strategies to help me. I kept flowers around the house because they reminded me that there were still beautiful things in the world and their scent helped lift my spirits. I also kept a journal every day and wrote down all that had happened at the time mum died and how I felt about it and going forward, how I felt each day and a record of anything I managed to achieve, even if this was something as basic as washing, dressing or eating, because there were days early on, when I couldn't even manage to do such basic things, so these were achievements on the days when I could. Writing also somehow helps you get some of that pain out by giving you an outlet for expressing it. I also took walks, to the park mainly, as I found it very helpful to get out of the house and the park was a calming place to sit and try to come to terms with all that had happened and to think about it all. It also made me feel better to be surrounded by nature and to see the inscriptions on the benches to people others had lost and that was reassuring, because it showed that those people were still missed and loved and remembered by those left behind. It also helped me to join a class a little later on.It made me think about something else and gave me a break from the grief, which is exhausting and will drag you down if you let it.
Don't put too much pressure on yourself to feel better so quickly. Your mum was a major part of your life for all the time you have lived and there is no one like your mum, so such a major loss is bound to be a huge shock and to take time to recover from. Just be patient and kind to yourself and try to remember to eat and drink enough and that will be enough of an effort for now. Grief and loss take a long time to recover from. It's the hardest thing I have ever had to do, so you need to accept that this will take a lot of time and will not be easy, but slowly you find there are some better days and over time, there are more good days than bad, but this will be part of you going forward. Grief changes you. Loss changes your life and your future and how you feel about everything, so it will take time. You have new you and a new normal to get used to. It will also take effort to find a way to get through it without letting it drag you down, so find the tools that help you feel better and turn to those when you need to.
A week is no time at all, even a year is very little time to try to recover from such a blow, so don't expect to be able to feel anything like normal again for a long time. Try to take things one day at a time or just one hour or minute at a time, when necessary. It's a long hard road, but there is light at the end of the tunnel. We are here for as long as you need us and everyone here has been through what you are going through now, so feel free to write here whenever you wish. No one will judge and we will all understand.
Thinking of you and sending strength.