Hey friends I need some insight!

So I'm just over 4 months postpartum. I am currently EBF and for the last week or so I've had consistent headaches, dizziness and feelings of faintness that last for sometimes an hour or so. I try upping my water intake and I don't have a history of blood sugar problems, although I was slightly anemic when I was pregnant (not sure if that has anything to do with it).

Anyone experience anything like this or have an idea of what could be going on?