17 weeks 5 days

Hey ladies! So I'm 17 weeks 5 days still very sick all day. My appetite has gone away not eating more than once a day on a good day. I was in the hospital few weeks ago for dehydration from the vomiting. A few days ago it started again dr gave me zofran but still not eating. Drinking plenty of water keeping most of it down which is ok I guess. I have a heart doppler and haven't been able to find babys hr. I'm down about 15 lbs from my first appt with Dr. I just don't feel pregnant anymore. No signs of miscarriage but it's scaring. This is my rainbow baby. Any thoughts or concerns? Am I alone in this?