Weird headache

I just had baby Friday..I’ve felt fine until tonight. I still don’t feel bad but I have kind of a weird headache. It’s kinda a throb off and on towards the top/back of my head. It comes and goes. I’m likely over thinking it but didn’t know if this was from giving birth/breastfeeding, not enough water (in drinking a ton but noticed my pee is more yellow than it prob should be) or if I should be concerned. I think I’m just being paranoid but this is all new to me