Dear user, welcome to healthcare magic. You have a high risk pregnancy for two reasons: Being hypertensive and having prior history of miscarriage. This requires more frequent antenatal visits in a specialized unit and I suggest the following: - Labetalol is not the first agent in treating hypertension during pregnancy. Although it doesn t affect uterine blood flow, but studies proved it not to be completely safe for your baby, so I suggest changing to methyldopa or using it as a second agent because your blood pressure needs better control. - monitor your blood pressure regularly together with urine examination for albuminuria ( by urine dipsticks ) for early detection of preeclampsia. - uterine artery blood flow affection is not a great deal but umbilical artery blood flow is more important because it detects blood flow to your baby. - you need to do the following investigations: serum creatinine, liver enzymes, coagulation profile, uric acid and a complete blood count. - please consult your obstetrician or go immediately to the hospital if any of these warning signs occur: leakage of water, blood, abdominal pains, epigastric pain headache, blurring of vision or decreased fetal kicks ( less than thn movements in 12 hours ). I hope these words were useful to you and I wish you the best in your pregnancy. Dr. Ahmed Bahaa.