сложный период(a bad / sticky / difficult / rough / patch means a period of time in somebody's life that is difficult or unpleasant • All marriages have their sticky patches. • Small businesses are going through a bit of a bad patch just now.Alexander Demidov)
переживать сложности(из книги британского автора • ..she confessed they were suffering a sticky patch in their relationship – она призналась, что в их отношениях было не всё гладкоYuliaO)