Dizzy spells?

I’m 8 weeks pp and the past week and a half I’ve been having dizzy spells to the point I have to stop and lean on something. Last night I got so dizzy I actually fell. I’m on iron pills so I know it’s not that and I’m also breastfeeding so I make sure to intake more calories and lots of water. Some days the dizzy spells are accompanied with a killer migraine some days it’s just the dizzy spells. I’m going to try and make an appt with my doctor in the morning but I’m wondering Has any one else gone through this? What did it end up being?