It is a shame you are so anxious, what is it with all the stress layed onto pregnant women these days? I was pregnant in Mexico, only found out after I had spent 2 weeks happily drinking cocktails and eating anything at all.
Not sure why you can't eat seafood, anyway?
I would not take the morning after pill, as if it is fate it's fat, and what if you end up struggling to conceive later and regret this decision? It is pretty much how I got pregnant (hence the cocktails in Mexico)
Starting to relax a bit would probably do you good.
Maybe yoga, to help you relax and control your breathing.
Also, it won't be your last good holiday ever, promise! Once kids are post toddler age, you can do great trips all together.
I desperately want to tell you to breathe! 