Flu Shot

I got a flu shot this week.  I get one every year, but this appears to be the first time that I've had a reaction to the shot - it's red, sore and swollen around the injection site.  This seems to be quite a common side effect, so hopefully nothing to worry about - but I've started to get a bit paranoid about my health at the moment, so this is just one more thing to add to the list.  I generally haven't been very good at going to a doctor regularly, but now I'm in in my 40's I think I might need to change my attitude - especially making use of my work healthcare plan whilst Trump decimates Obamacare...