When to call the doc?

I ladies. Like I'm sure most of you were at 8 weeks, I'm suffering from constant nausea. However, I was hospitalized at 5 weeks due to dehydration from what everyone thought was the stomach flu (we are more prone in this state, afterall). But everyday I seem to be getting worse and today I've been up since 3 am nonstop vomitting with diarrhea again and I can't even keep a sip of water down. I feel like I did when I ended up in the hospital. I have extreme food aversions and I have trouble eating most days. But the nausea is typically manageable. But somedays it's awful like this. I'm worried I may have extreme morning sickness. But perhaps I'm just being a big baby? Help 😩