Fizzy drinks

I’m really struggling! All I ever really drank before finding out I was pregnant was Pepsi, but since finding out I haven’t touched it. So I’ve had 5 weeks of drinking mainly fresh orange juice, sometimes milk (I’ve tried water but it makes me sick), and I honestly feel like I’m turning into an orange 😩 My midwife said fizzy drinks are ok every once in a while but I’m still worried 🙄is anyone else concerned or am I being pathetic? I just want a can of Pepsi! 😅