I can't definitively answer your question, b/c my OB opted to switch me from atenolol (I was taking 25 mg from pre - preg till 15 wks G/A)to aldomet. All I know is that my bps on aldomet are a little higher than on the atenolol. My ob switched due to the low - birth weight "connection", but at my ultrasound last week (3 wks after I finished the atenolol), my baby was right on track. We can't know if you or I or anyone will go on to develop pe, but my OB did say that with mild to moderate hypertension, that is well controlled with meds, the chance of having a good preg. outcome is high. I hope your meds work for you.
BTW -- never had a problem sleeping on atenolol. One of the USUAL side effects is fatigue! but I HAVE had trouble sleeping when worried, or concerned (esp. about my preg. and health). Maybe your a little stressed -- but ask your pharmacist. Perhaps atenolol works differently for you!
Evan 12-9-01 (PIH @ 29 weeks)