Dizzy at 31 weeks

Jackie

Hello just a quick question. I’m 31 weeks pregnant and I’ve been feeling a little dizzy like the room spinning it last a few seconds and has been happening here and there. I asked my OB about it but at that time it only happened once. She said it’s normal! But recently it’s been happening more. I’m trying to stay hydrated so just was wondering if anyone else is or has gone thru this? Thanks