Dr Pepper

I’m 9 weeks pregnant and have struggled with nausea and vomiting to the point I’ve been severely dehydrated. I was put on medication, but even with them, they don’t always do the trick. I cannot motivate myself to eat. The other day I took a sip of Dr Pepper for the first time in forever. It settled my stomach and gave me an appetite. I’ve tried sparkling waters, sprite, you name it. I’m trying to limit them of course but if it works, should I continue?