no. this would not likely be harmful assuming your girlfriend does not have any blood-borne diseases like hepatitis. sucking blood really not a safe practice. even for vampires so i would caution you from doing this again unless of course you are a vampire.
hi my blood group is o- and i sucked few drops of a+ blood from my girl friends cut. is this harmful for me? . hi my girl friend accidentally got a small cut on her hand and i sucked that blood immediately. it was just a few drops. my blood group is o(-) and her blood group is a(+). is this harmful for me. if so what should i do now. please do help me out with this. thanks.