Hi, on May 25th i suddenly developed nausea and really bad headaches. i went to the doctor and they took bloods and found out i was low in iron (Ferritin= 4) which was very low. since then I've been on 100 mg ferrous fumarate and my headaches are almost completely gone but i still get really bad nausea. i don't know what to do, i feel nauseous before and after i eat and after eating despite being hungry its causing me a lot of anxiety because i can't concentrate with my life. i feel like I'm going to throw up 24/7 and i am always hungry