Aww mama, kaya mo yan! So honestly it's hard to say if it's chickenpox or a heat rash / reaction lang from the saltwater dahil first time pa lang ng LO sa dagat, a few of us tried beach trips and ng first time, some babies got little rashes from the salt or sand. Since di siya kumakamot at walang fever, it sounds mas likely na irritation lang, pero definitely good na scheduled na kayo sa pedia bukas kasi sila lang talaga ang makakasiguro. In the meantime, just keep the area clean and dry, at avoid swimming muna until the pedia checks LO. You're doing the right thing by getting her checked out!