Girls, hi. SOS!! Today I found blood in my diaper, it's firm and comes…

Girls, hi. SOS!! Today I found blood in my diaper, it's firm and comes with hard stool, could that be the reason? Could there be a crack or something? My husband says it probably is, but now I'm not calm, what should I do, run to the doctor or just observe? I'm really worried. + We have problems with feeding, it's a real quest to feed the baby, I talked to the doctor about this, we did a test, our iron level is low, we're taking an iron syrup now. Has anyone had something similar, what did they do?