I'm vegetarian (have only been vegetarian for 3 years now) I still eat eggs and drink milk...etc, just no meat. I'm 20 weeks and still feeling very exhausted and on and off nausea and a friend told me maybe I'm not getting enough iron. How would I know for certain if this is the case? Is it a blood test or something that the gp can check for with the urine sample that he collects every few weeks?