I'm starting to think i may have low iron.any advice?

Get seen: If you're on a vegetarian or other limited diet and you think you need to supplement, do so. These diets are often marginal as far as iron goes, and you should probably be supplementing for other nutrients as well. If you are having heavy periods, or if you simply feel unwell / look pale, get with your physician now. This is too serious to ignore or try to treat "shotgun" with iron pills.