Translation of leidig

Writing large essays has never been my favorite task although it is one of the most important when learning a language. Spanish, English and German are all entirely supported by Vocabulix.
I think that subconsciously she means that her pregnancy has become a white eleph. But even though she compares her pregnancy with the large, grey animal a moment later she regrets it and says it.
We walked by waterfalls and rivers, but the water was too cold to swimm in. The hike made us tired and we were in the valley, which meant that we had to climb up again. The climb was difficult.