Smoked burgers???

Ok! It’s bbq season where I am and my family has a smoker which means they smoke pretty much EVERYTHING. My mom made everyone smoked hamburgers for a big family dinner. I’m 31 weeks pregnant is it safe to eat??? The burger is cooked all the way through but I’ve read a few places that it’s not safe.... but all the places I’ve looked it up assume the meet isn’t cooked all the way through.. anyone have any information or trustworthy/reputable sources I can go to, to find out??