I ended up low in iron by the end of my first p/g but started off ok. I was taking the blackmores multi but needed to take iron tablets by the end and when I was bf my dr suggested to take them 3 or 4 days a week.

I suppose just know that you don't have to take iron tablets every day. I know there are times when I've felt tired/weak and I've taken them for a few days and then been fine and stopped taking them again. My dr says it's fine to take them just when you need them as such.

You're requirements change through your p/g as your blood increases so thats why a lot of people end up low in iron by the end....