It is not uncommon to experience irregular or missed periods when travelling, which may be completely normal when taking into account the change of environ­ment (unless you are pregnant, of course).

A spiral can result in infections in the genital areas when you travel to warmer climates for a protracted period.

If you know that you often get some particular infection, for example, yeast infections following an antibiotic treatment, consult with your doctor about a suitable medicine to take with you on your trip.

Also remember that tampons can both be expensive and hard to come by abroad.