Secondhand smoke

Hi I feel like I just need some peace of mind. Im 13 weeks today and my husband and I met up with some friends at a casino, we only planed to stay a little bit but ended up being there like 5 hours. Obviously a lot of secondhand smoke. I went outside 3 times every couple hours to get some fresh air for a few mins. But now I’m feeling really guilty and wondering if I made the worst decision ever?!