Unhealthy food

Hi mummies! Im 13 weeks now and since pregnant, i can only take fast food, instant food or those process food and always want to drink soda! I feel so bad and unhealthy but i cant take normal food i will feel like vomitting always. I still can accept fruits. Any mummies experience this? Will it go away? Its my third pregnancy and i never felt this way. What should i do? #pleasehelp #advicepls #pregnancy