Iron deficiency/vitamin B12 deficiency while pregnant

L 🤰🏻 • •Heart belongs to a state trooper 💙 •AGL 4-10-18 👶🏽💜🌈 •Bonus son- ELW 👦🏼💚 •EJW 6-2-20💓👶🏻

Anyone else have to see a hematologist? I found out in March I have severe iron deficiency anemia and a vitamin B12 deficiency.. I'm 5 weeks pregnant currently so my hematologist wants me to go back to taking pills till I'm out of my first trimester then I can go back to the shots and injections. Just curious if anyone else has this issue and if it goes worse during pregnancy?