What would you do and how would you feel

I am sick for the past 4 days with terrible headache (so bad that when I change position my head feels like it is going to explode) and I am 12 weeks pregnant.  So I have been suffering for the past 4 days and today I have my prenatal appointment where I am gonna get to hear my baby's heartbeat and talk to the doctor about me being sick and taking some kind of a medication. Anyways, so my husband took a day off today because there is a golfing event (it's completly free with lunch provided) we wanted to go together but because I am sick I choose to go to the doctor instead.  And he decided to leave me for the day and go golfing. Never mind we have a 3 year old that I have to take care of all by myself today and take her to the doctor with me.  I am beyond hurt right now. I think it's more important to check on me and the baby than playing golf with his sister and friend. I am so hurt because I have to do this today alone while he is being selfish. What do you guys think? How can I tell him in a way that he would understand my feelings? Anytime I talk about this or something similar, he doesn't seem to understand where I am coming from.