7 month old spitting up...Should i change her formula?

Maybe a tooth is trying to make its way through? (My son's extra drool makes him spit up sometimes) That might explain not wanting the bottle. Will she take juice from the bottle? Maybe give her a shot at a sippy cup and see if that is also a problem for her. I am sure everything is fine, but I know how I worry with spitting up, we had reflux issues too!