Morning sickness! PLEASE HELP!

Basically, my pregnancies suck for morning sickness. With my son it was bad, but this time round its worse. I've been put on bed rest because I can't keep anything down and I keep getting dizzy spells.

My last pregnancy it ended when I hit 12 weeks so I'm hoping it'll be the same again this time (I'm 10+4 weeks). When did everyone elses morning sickness subside? What did you do to help control it? I've been prescribed anti sickness tablets, they aren't working. Biscuits in the morning before I get up, those bands, eating small but often, tried eating big meals. Nothing is helping.

Thanks!