Oh nooooo, have a fabulous holiday and try and relax, I am sure a dip in the water won't hurt, but I guess I wouldn't risk it till I heard for sure, could you ring the clinic, I hope one of the nurses answers you, I found this
http://www.ivf.com/ivffaq.html which says;
What about other activities? How soon can I resume my normal routine?
A: The IVF team recommends that the patient be sedentary for a full 24 hours following pre-embryo placement in the uterus. Strenuous exercises such as jogging, horseback riding, swimming, etc. should be avoided until pregnancy is confirmed. Otherwise, the patient is free to return to her regular activities.
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Which would make you think its the swimming so dipping would be ok, but then others just say you must not swim or have baths, so all confused now, sorry I was no help ! C xxx