A year old and vomitting

My daughter will be a year early next month. I posted awhile ago wondering why my daughter might be vomiting and most people said it was because she caught the flu that her brother had. Well its been a week now and she doesn't show any signs of the flu besides throwing up at night. I always lay her down with a bottle so i am wondering if it has to do with that because I just put her down for a nap and the same thing happened. No fever, just throwing up in bed.

EDIT: since some people seem worried about my abilities as a mother I thought it would be important to share that I DID call her pediatrician after she threw up the first time. He told me to take her off of whole milk and go back to formula. Yesterday we both went in to the ER because of vomiting and they didn't seem nervous about her. Her vitals were all normal and she left with nausea medicine. But she is still throwing up today. Obviously this isn't the first place I went for answers. Just wondering if other mothers experience this same thing around this age, if its normal, if its something about the night time bottle that might be the problem?