food during pregnancy.

So it seems to me I can't really keep anything good down. I throw up almost everything whether it's an hour later or 10 minutes later. Or. before I go to bed. But I've read ramen noodle isnt good for you and also canned meals like chef boyardee aren't good for you.. is this true? Or can I eat it because that's really all I can keep down... and this time don't tell me I'm gullible or stupid for reading something on the internet and believe it. I don't necessarily believe but I would like to know if anyone knows. Thank you:)