Ay, kahit hindi ko personally na-experience yan, a few of my mum friends actually had red eyes after delivery kaya hindi ka lang! Could be from the pushing and straining during labor, or sometimes irritation lang from hospital lights and stress, but honestly best to mention it to your OB or check with a doctor kasi mas mapapahusay nila makita in person kung ano talaga, better safe na lang, especially ngayon na baguhan ka pa lang sa postpartum. Hindi ko masyadong ma-assure kung anong tama based on what you're describing, so definitely worth a quick call or visit!