is this a reaction to formula?

[stacym918]

I am trying to switch my 5 month old to baby only lactose free from similac sensitive. Sunday, monday, and tuesday I gave her one bottle of the baby's only, the first bottle in the morning (7 am). Anyway, the past 3 nights she has been restless from about 3:30 am until she wakes up at 5:30 or 6. I cannot tell if its gas, which im usually pretty good at (she is not pulling her legs in) just fidgety, and kinda noisy but asleep. Would it be odd that she'd be reacting to that one bottle of new formula almost 24 hours after drinking it?
or could it be teething?
I gave her gripe water and it really didn't seem to make a difference.

[blueone]

It could be teething. If she starts crying, pulling in her legs, or getting really fussy and all then it could be a reaction to the formula.