Oh @Crzy I really feel for you.
I suffered incredibly badly from 6 weeks up until around 15 weeks (currently 16 weeks). I'm slowly coming out the other side, albeit I'm still on lots of anti sickness medication.
If it's getting to the stage of not being able to keep water down, tell the doctors that you need to have your urine tested for ketones. If your ketone levels are too high then you probably need to go to hospital for some fluids. This is where I ended up but it made me feel better for a short time. Doctors also offered me anti sickness injections as a first port of call when I hadn't kept fluids down for 24 hours.
If you've gone for any extended period of time without keeping fluids down and it's out of hours, please ring 111. I was told I could also present to a&e as they are aware of the protocol to start fluids.
I kept holding out for week 12 to feel better, but I'm sorry to say your hormones are probably still peaking. At 16 weeks I'm no longer being sick every day, I'd say my turning point was more around 15 weeks.
I wish there was something to make it better. Just know that what you're going through is so real, rest and sleep as much as your body needs, accept any help that gets thrown your way, and keep getting hold of the doctors for help. You may need to try a couple of different medications to find something that'll ease it.