Nausea but can’t actually throw up?

So I have a really tough stomach, I can only remember one time I’ve thrown up before and I was VERY sick. Anyway, here I am 6 weeks 5 days pregnant and the nausea is real. I’m eating small meals here and there and trying to keep something in my stomach but NOTHING sounds good. I’ve yet to throw up, but I can’t stop dry heaving. And it’s exhausting. Thank god I work from home because we are going on hour 4 of me running to the bathroom and sitting by my toilet and feeling like I’m on the verge of throwing up but nothing happens. Then I get sweaty and shaky and I have a horrible migraine because I just cannot throw up. I’ve tried Dramamine and tea and all of that and the nausea stays. I also haven’t had an actual appointment with my doctor yet, but I called and mentioned this to the nurse and she said oh it’s normal, just take an advil or something. Which I get they can’t do anything, but any advice?