Morning sickness

I’m 10 weeks with twins. I’ve had morning sickness ever since about 6 1/2 weeks. These last two weeks have been the absolute worst. I’ve been drinking tons of water to make up for what I’ve been puking which seems like everything I eat/drink. I’ve missed a few days of work it’s been so bad. I’m on zofran but it doesn’t help. I’m constantly nauseous if I’m not puking. I don’t spend time with my husband or 6 year old because I’m constantly bed bound from feeling so awful and getting sick. it’s really taking a toll on my daughter I feel like. She’s beginning to act out. When does it get better? What else can I do? Any tips appreciated. I’ve tried peppermints, gum, ginger ale, eating smaller meals frequently, crackers. I’m at a loss.