7 weeks puking blood

So I woke up this morning and drank two bottles of water. And I'm struggling with morning sickness so I've been living on instant oatmeal. I make it to a soupy consistency so it will go down easier. Chewing makes me gag right now. Well I drank my cup of oatmeal and sat back to let it settle before taking my vitamins. When I sat back my stomach did a big turn and I was running to the bathroom. I projectile vomited all the oatmeal in one heave. And at the end of it and on my second and third heave blood was coming out. I haven't eaten anything red and I just woke up. I just went to the hospital yesterday to have my levels checked for a subchorionic hematoma. So I don't really want to go back today if I don't have to. My stomach burns a little but not like heartburn. I don't know what I should do it if maybe I just threw up too hard. Has anyone had this problem before?