Need some help ladies please!!!!

Ok so im prego with my fifth kid and i have been a high risk with three. My 1st i had pre-e born at 32 weeks and my 2nd was born at 34 weeks and 3rd was born at 36 weeks. All having problems after birth. My 4th was born at 39weeks and she was good no complication. Well everything has been good with this pregnancy until recent. I had my appt today and the doctor said that they want to see me every two weeks and they drew blood like 7 vials. Ii have noticed my self that i have been extremely sleepy and tired and i know it normal from research i have done. But the doctor has said my baby has dropped and she is head down. I have been cramping alot for a few weeks i just chopped it up to braxton hicks. So im really nervous so ladies if you may k ow anything or have been thru this before i would appreciate and advice. Thank u.