Severe vomiting during pregnancy (hyperemesis gravidarum)

I am constantly sick to my stomach day in and day out. I can't keep anything down not even water. About once a week I can keep something down. I'm going to talk to my doctor to see if my doctor can write me something to help. None of the over counter stuff works at all. Not even the candy drinks full of carbon which actually I found out make it worse. So maybe that's part of my problem too. I was told that this is a sign that I have Severe vomiting during pregnancy (hyperemesis gravidarum) and can only be treated in the hospital. Does anyone know if this is true? None of my other pregnancies had been this horrible with nausea. My last one I was sick to my stomach 24/7, but nothing like this. All I do all day and all night is vomit. I just want the nausea to go away 😭.

I'm 7-8 weeks.