Dizzy/lightheaded spells


Hey all! I’m 24 weeks today with my second little man, and lately I’ve been getting really light headed, dizzy, start to sweat and need to lay down and then it goes all black , and if I stand up it will happen again, I did have a few episodes like this with my first and dr told me it could be my blood pressure getting to low, but it’s happening more frequently and longer this pregnancy, just wondering if this happens to anyone else ?