should i be worried?

i had sex and very small amount of blood came out of me even though i’m not a virgin and have had sex before, should i be worried by this? it’s not sore down there or itchy at all just a little blood, nothing out of the ordinary apart from a little light blood, some sources say it’s okay but some say it’s a serious case of a disease?

me and my boyfriend have never had sex with anyone else apart from eachother, never experienced bleeding after sex apart from my first time.