Any ladies in the same boat or have advice?

I am currently 12 weeks and 6 days. I now have my appetite back to a certain extent. Any who I eat breakfast and when noon come if I don't eat within 5 to 10 mins max I vomit bile. The baby doesn't play when Jelly bean says it's hungry lol... ok so for example I will make me a sandwhich and have a small bag of chips. I will eat all that but then when I know I am full ( well my mind) I get the nauseous of when I am starving or at least my body thinks I'm starving. So I'll eat another bag of chips or even a granola bar. I eat snacks throughout the day. Granola bars, Apple sauce, peaches. I am like this all the time. I can eat dinner and portion my food to proper amounts and be completely full afterwards. 2 hours later that feeling comes back and if I don't grab something I vomit bile. I don't know what to do. Any ladies have this problem. Any advice. Sorry that this is long. I wasn't like this with my first born. It's like the baby is constantly hungry....