I threw up help please!?

Yesterday i woke up felt fine. Started to make breakfast. took my medication for thyroid and acne. Drank orange juice. Began eating then i got dizzy and felt like i was about to faint. It was not that bad though. Then my stomach felt like it was burning. So i took two tums. Then i could not down any food or drink. I went to the bathroom and had a regular stool. Then i threw up a little. Then i walked around and drank a gl of water and 5 min after that i threw up agian and it was a lot. I did not throw up the rest of the day. I felt dizzy and chilly but it was cold in my room. I never had dihaerria. was i sick with the stomach flu? i was not achey nor tired. what happened why did i throw up?