Dizzy spells

Jo

Hi everyone ! I recently started getting dizzy spells and it sometimes makes my vision go out and then I feel like I am going to faint. Has anyone else experienced this ? I am 34 weeks and I just want to make sure I am doing everything I can to prevent early labor. It happened today while standing (I was not locking me legs) then it happened last Friday while I was sitting down eating. Any help is appreciated !