Prilosec safe during pregnancy?

I'm currently almost 11 weeks along and have severe GERD. Doctor first prescribed Zantac but it doesn't work. Now she prescribed Prilosec and I'm a little scared to take it because I have a hemorrhage that shows on my sonogram; but baby is doing well. Would Prilosec have any affect on that or make the chances of misscarriage greater? What are everyone's experiences? Thank you.