Morning Sickness 24/7 sicknesses

I am now 11 weeks and 5 days. This is my second child. With my first one now an8 year old girl I was sick all day every day I ended up at 115lbs at nine months. Because of it even after birth I developed heartburn that turned into over production of vile. And now with my second child I seen to experience this all over again. I’m hungry, I eat but I puke it right out. I’m overwhelmed because I don’t want to get that sickly unhealthy weight again. I have tried many “old wife tales”advice like crackers, 7 up, ginger tea, red raspberry tea, I give up any spicy and greasy food. I also tried vitamin 6 recommendation of a nurse. Nothing seems to help. Please if anyone has experience this and can help me. I would really appreciate it. !!