Is Atenolol Intake Safe During Pregnancy?

I take meds for HBP. My doctor changed my med to Atenolol 12 years ago when I wanted to have another baby. I had a child 10 years ago, healthy girl. Since then, doctors will not change my med since I have maintained good BP with it. Is it still safe? I m 8 weeks and have not had my first OB visit yet.