5 weeks pregnant, wish I could be in a bubble for the next 7 weeks.

Any other pregnant ladies get anxious about everything they come across in their first trimester? For example, I'm going to a concert tonight and I'm anxious about if I will be around 2nd hand smoke to the point I just want to stay home. Hoping I can just learn to relax and have fun! Anyone else have similar anxiety? Hope I'm not alone.