Twins and sickness

15w3d pregnant with twin girls. When does the sickness stop? I’m miserable. I’m currently taking bonjesta, but it doesn’t help. I’m still sick everyday. & losing weight. I’m hoping it doesn’t last my whole pregnancy. I want to be able to enjoy pregnancy since this is my second & last time ever carrying a child. When I was pregnant with my 6 year old daughter I was sick but meds helped and it went away after I started second trimester. How long did it last for some of you?