Dog bite

Destinie
So I'm about 6 weeks along and I was bit by a dog today. Small dog but it broke the skin. It was growling at my son and I tried to remove my son when it bit me. I bled a little. Doctor suggest I get a tetanus shot just to be safe. I've read mixed reviews about getting it even though most women get it towards the end. I have not had one with any of my pregnancies. Just curious yall thoughts. Going it to at least have it looked at