Measles outbreak in my town

Okay so long story I will try to make short. I am 27 weeks and 3 days pregnant and there have been cases of measles popping up in my town and it has me spooked (I overthink a lot) and today saw that a child now has it. Well I have a stepdaughter who go to school and obviously you know how easy it is for germs to be spread and I got freaked out even more and was asking my fiancé about it and he just brushed it off and I looked it up online and got even more freaked because it says that it can cause early labor or even stillborn and he got mad at me and snapped at me to get off the internet and I started to cry cuz hormones and I just felt like he didn’t care.

Am I being dumb and overthinking it? I mean I get that he has a child already but shouldn’t he worry about this baby too? He is just brushing it off.