Does anybody know why my doctor was mad?

I went to the doctor yesterday to get a referral to another doctor and to get a regular routine check up. A few hours prior to arriving I was raving about how good of a doctor he was and how I love having him as my doctor. Then I finally see him and his vibe was off. He got very upset because I declined the flu shot. He said because I was breastfeeding it’s very important that I get one yada yada yada. I called my husband he said No and I really wasn’t feeling it either. My doctor got very visibly upset and said well I’m not going to force you so whatever. He threw my referral paper at me and stormed out. He even said some sly comments about my husbands advice. I’m very unsettled with his behavior that day and I want to know how everyone else feels or is it just me? Why was he so mad? I have a feeling it was because I didn’t have a “money making” visit.... if you know what I mean. I feel that’s why he was trying to push the flu shot on me so he could at least make a bigger profit from my visit. I could be wrong but I can’t think of any other explanation as to why he was so upset.