Ay, relate ako diyan sis, ang dami ring ganitong experience sa amin, wala ring written prescription kaya ang stress haha! Honestly, kailangan mo talaga ng proper prescription from your OB kasi may specific brands at dosage sila na recommended based sa bloodwork mo, lalo na kung may anemia ka or something, hindi lang basta any multivitamin. I'd suggest bumalik sa hospital or mag-follow up sa OB mo with a list of questions, ask them specifically what brand and how many mg ng ferrous sulfate/fumarate they want, because iba-iba talaga ang formulations at marami ring available sa drugstores na pwedeng maging confusing. A few of us moms nag-struggle din before kasi thinking "ay same lang lahat ng vitamins" pero hindi talaga, lalo na pagbuntis or postpartum. Get it in writing next time para sure, okay?