Ay, don't worry too much po, one drink is unlikely to cause harm, pero since you're concerned, best to message your OB or call their clinic para sa peace of mind, lalo na kung heavily pregnant ka na or may specific health concerns ka. A few of us mums have accidentally had herbal teas during pregnancy din, and it's the regular consumption na ang risky, hindi ang one-time sip, pero your doctor will know your full picture best!