What can be the problems if I have lost my pills abroad and cannot continue taking them?

You did not write what pills you are talking about. As for Cyclo-Progynova, please read on. If several Cyclo-Progynova tablets are missed, unplanned bleeding may occur. A longer break can also cause the symptoms of estrogen deficiency to recur if the product was used precisely for this purpose. For Cyclo-Progynova, the scheme of application is as follows: after a 21-day cycle of taking tablets, a 7-day break should be made. Although estrogens, which are one of the components of the drug, have a protective effect on hair, it seems unlikely that the effect of discontinuation of therapy will be their immediate and rapid loss. Although a link to the lack of the drug cannot be completely ruled out, the possible causes of hair loss include a change in water or cosmetics, possibly the stress that sometimes arises before the trip. I enclose additional information: https://www.gdziepolek.pl/artykuly/jak-kupic-leki-za-granica https://www.gdziepolek.pl/produkty/20657/cyclo-progynova-tabletki-powlekane/apteki/w-warszawie