Translation of Sardine

I arrived there but could not find a hotel immediately, so that I took my luggage with me. I know that this is very provocative to thiefs. One should not walk on the street with a big backpack.
The cannot do it because of the girl's pregnancy. This fact creates a very unpleasant tension between the two characters, their future seems to hopeless and uncertain. Will they be together?
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.