Oh mama, I also wanted to terminate my much tried for baby due to HG, I'm grateful every day I didn't.
I'm on my 4th hg pregancy and I'm going to suggest this is what you ask for, your GP may say no so you'll need to try with your early pregnancy unit.
Omeprazole 1 in the morning
3 x ondansetron a day + stool softeners to be taken, I recommend 2 x dulcoease or you're getting piles.
3 x cyclizine a day
Prednisolone (steroids) ask for 40 mg which is 8 tablets to be taken in the morning with some food, early in the morning, after your other meds so they've a chance of staying down.
Reduce steroids by 10mg per week.
If you need to have them given IV until you can keep them down. Plus the fluids will make you feel less like death.
I'm an HG write off for the whole 9 months and the recovery is shocking, the muscle waste, teeth, skin, hair & nails. The depression food issues etc, it's tough but as cliche as this is... your baby is worth it.
Please seek help and fight for this.
I'm bedridden myself with HG atm but if you want to message me and have me ring your GP and be very assertive, I will.
I've done my HG dues over 17 years now and I've learnt as pregnant women, we're expected to just stfu and suffer silently.
I don't want that for you, OP x
Also - water and healthy food is a massive trigger for sickness for hg.
Full fat coke or sprite and French fries etc are very popular safe foods for many, (been in online hg groups for years) and if you have any craving, it's the time to try it!