I'm sorry that you're not feeling well
I'm so glad that Robert wasn't upset with you, and that he finished putting the bike together for you. 4 minutes is a good start. I know I couldn't do that.
Your pulse may be getting high due to anxiety. Robert being there probably relaxed you, so that's probably why it went down while he was there.
I really, really, really hope you see some improvement in your depression after you've been taking the Cymbalta for a while