Mcv 86f (84-102), mchl 29.8 (28-33) mchc 348 (300-350) do I need start taking iron?

Normal levels. Your red cell indices are normal and show that you are not anemic. However you could still be low in your iron stores. Serum iron and iron binding tests tell you what your iron status is. If you have significant monthly blood loss, taking a daily iron pill is worthwhile.