Tooth infection. *update

I woke up this morning with a swollen jaw from what I'm assuming is a tooth infection. I've called multiple dentists and none are able to see me remotely soon, I'm 6 months pregnant now. Obviously an abscessed tooth cannot be good for my baby, or me. I know the infection can spread and become a bigger issue. I don't want to go to the emergency room if I know they cannot do anything for me, can they at least prescribe antibiotics? What are my options? 
*update; I explained my situation and got in with a local family practice dentist! thanks ladies! feel so much better knowing I'm getting this treated and not harming little one.