On Sunday, I Vomited Every Hour For 6 Straight Hours.

On sunday, I vomited every hour for 6 straight hours. I saw my GP on Monday and was told it was probably a viral infection. no tests were ordered. Now when I try to eat, I get a bloated stomach and my stomach always feels irritated. Could I possibly have gastroenteritis? I am on Methotrexate & Enbrel for an auto-immune disorder. Why does my stomach feels so bloated and hard and why the pain?