"morning" sickness vent

I am so sick of being nauseous and throwing up! it's taken all of the joy out of being pregnant, and makes taking care of my 2 year old impossible! I'm 10w 4d and can't wait for this to pass! 
I was prescribed zofran and it worked for 2 days, but now it's stopped working and I'm throwing up 6-7 times a day again! 
my sweet hubby is trying to help, but he gets frustrated and worried when i can't keep anything down. plus we work opposite schedules so he can't really help with lo when I need it. 
When will this end?!? with my daughter I was a little nauseous all the time but no throwing up and it ended at exactly 13 weeks. hopefully I only have a couple more weeks left of this!
Any tips??