what two things are bothering him?

This is a very broad question. In future questions, you might want to be more specific. I believe the things that are bothering Adam are:

1) that he lied to Amy about his past.

2) that he felt it was necessary to lie in the first place

Adam is also worried about the fact that he has nowhere safe to leave his bike, and when he finally leaves the bike and goes into the hotel bathroom, he starts to feel claustrophobic.