Normal??

I’m about 8 weeks pregnant and ever since 5 weeks I’ve been nauseous on and off, dry heaving/throwing up(which I know can be normal) but I’ve noticed depending on what I eat if it’s something heavy or some what fatty it stays in my stomach. Today I had peanut butter and apples at noon time. It’s now 8 pm And I just threw up the peanut and some apple. Has anyone had this happen? I can feel the food sitting in my stomach. I’m ok if I eat lighter stuff like fruit, veggies - without anything else, maybe some pasta. But cereal with milk sits in my stomach too. I’ve lost 2-3lbs since the start of this pregnancy because I have such a hard time finding food that won’t make me sick.