Refinishing hardwood floors-TOXIC?!

Al

So my floors were incredibly old and awful, and I really wanted them redone before the baby arrived. We had to move everything out of the house, and I knew that would never happen once we had kids. The guy finished up on Friday and I stayed out of the house until Sunday. I came over to check things out, but it smelled pretty bad so I went back to my parents house. It is now Tuesday and we brought our stuff back here to move in, but I can still smell it. I’m going to go back to my parents house for the night. I’m just really worried about having breathed in the fumes on Sunday (for like and hour) and today. It was dry but still smelly. Should I be concerned??? I am 26 weeks.