I BF my daughter but we introduced her to a bottle at 4 weeks of age because i was going back to work. She did great with the bottle for about a month and a half then she started to refuse it. So we tried another bottle it worked great for a week and now she refuses that. We were told to try a sippy cup so i did it worked great for a day now she refuses that. Now by refusing i mean she screams til she's red in the face and gasping for air. I really don't mind exclusively BF her but i have to leave her with someone so i can go to work. I am at my wits end trying to get her to take a bottle. We've tried all the bottles and nipple we could find but nothing works. Does anyone have a suggestion on what i can do?