Sounds like hard work. You may want to wait until you're back to try the meds on a day of rest to see if the antihistamine puts you to sleep or the decongestant makes you wired.
![Eyebrow :eyebrow: :eyebrow:](/community/styles/scubaboard/smilies/eyebrow.gif)
I don't remember ever having a problem, but I started on then-legal allergy meds 50+ years ago, and some of those were outlawed and replaced I think - so I grew up on them.
Your body is allergic to water in your nose for some reason, then infections can follow. Best to stay clear from the start.
We were thru there again Labor Day weekend on the way to Mineral Wells SP - talk about hot camping, then a surprise rain caught us with rain covers off our tents! Penitentiary Hollow was neat, but I'd rather meet you in Cozumel sometime.