21 weeks..no sleep.

Okay so I'm 21 weeks with my first and I just cannot get comfy at night. Doctor gave me ambien..but the thought of taking it makes me so nervous. I wake up every hour or two and have to do some walking to get back to sleep..causing me to sleep allllllll day and taking away from hubby and me time. Any ideas or maybe safer meds that I can ask my doctor about? This mama just wants some sleep. 😔