Can someone help me with my problems? Advice are most welcome and I appreciate your time in reading my thread.

Problem 1
DH invited our son and I to a lunch get-together between his office staff and us. My name and his office secretary’s name sound alike (only one alphabet is different). During lunch, DH was trying to get everyone’s attention for a photo session. At that time, I was busy tending to our 5-year old son and was not posing for the camera. I think he was trying to call out to me but called me using his secretary’s name. When he realised his mistake, he corrected himself and laughed the matter away.
I was very offended with this issue and I am not sure whether should I confront him with how I felt, although I know there is nothing much either one of us can do about it. She is one of his best-looking and most hardworking secretary......I think there is something more going on between them apart from being boss and secretary. What should I do?

Problem 2
Our maid has just left. I spent the whole weekend cleaning, cooking and taking care of the kids with some help from DH’s mom. From the total of 48 hours of this particular weekend, DH only spent 8 hours at home (awake). The rest of the hours were spent on sleeping, extra work in the office, social organization committee meeting, grocery shopping and going to the gym. To top it up, he has been very rude to me this weekend. Last night, he came to me asking for sex. I felt so cheap. I always thought prior to sex, DHs are supposed to at least please their wives with some sweet talk etc. I just refused and he was upset. He has not been talking to me until now.
What when wrong? How should I have approached the problem?