Sentence 1: After I ate dinner my stomach was hurting. 
 Sentence 3: Then, I had to run to the bathroom and throw up 
 Sentence 4:  Nothing but acid came out of my mouth 
 Sentence 5:  Ever since I take acid reflux tablets 
 Option 1: I didn't know why. 
 Option 2: I didn't know why but I will never puke.