I think you'd better talk to your boss nicely about your concerns. I believe he/she will understand. It is better to confront your boss now than you going around worrying about your baby for the entire term of pregnancy. A pregnant woman has enough to worry about already.
我鐘意你同我講 I Love U, I Love U Too!
You are the sunshine of my life. That's why I'll always stay around. You are the apple of my eye. Forever you'll stay in my heart.