I'm 33 weeks 2 days pregnant. I have a posterior low lying placenta with maturity grade 3. Baby was around 1.68 grams at the time of the scan which was in 30th week. The fetal rate was 149. Biophysical score is 8. Other parameters are normal. No hypertension or gestational diabetes. Usually I track the baby movements in the afternoon after my lunch and find 10 movements in a average of 12 to 15 minutes. Since last night I was worried about the placental maturity and now notice a lot of movements in the baby. With hardly few minutes of gap. I didn't sleep well last night. Is this normal? Please advise.