Anemia in pregnancy

Anyone suffer from this? I have low platelets so after the first trimester I stop taking my prenatal vitamins because of the dha and omegas (they lower them more). However my hgb level was 11.3 and anything below 11 is considered anemia. My ob didn’t even care to tell me. Not to mention I have had insomnia, restless leg syndrome, chest pains, shortness of breath, and extreme fatigue which are all symptoms of anemia. So now I’m looking for a prenatal vitamin that contains iron but does not have dha or omegas which is turning out to be work difficult. Curious of anyone whose has this tore of anemia and if you have any tips or literally anything to help me sleep. I’m so uncomfortable and itchy and my legs feel so hot and I didn’t sleep at all last night either. Just miserable. Also only 31 weeks if that makes a difference.