errr, your iron is low, it's summer and you're a young woman? Ummm, not rocket science I don't think.
Eat more stuff with iron? raisins (grapes), prunes, spinach, romaine, kale, HUMMUS (chick peas are incredibly high in iron -- they make awesome soups and hummus is one of my favorite things on the planet)
I've been low iron at certain times of the month all my life (since I was 13 1/2 *ha*) and I just always know I gotta push iron then (cos the pills are so darned uncomfortable to take). In other words -- this isn't dire -- this is pretty well normal and is something you can cope with with diet and realizing it's "time to push iron"
When I moved down here to Florida the problem got MUCH worse because the heat really sucks the iron out of you big time so living here was way worse than living in the armpit of Lake Erie & under Lake Ontario, but it really was nothing hugely new.
Having your iron tested isn't huge -- have you ever donated blood?? That was how I used to always keep track of my iron and my cholesterol for free -- knew there was a certain time of the month ... NOPE can't give then ... but could a couple of weeks later.
Being low iron will make you feel tired and drained tho.