Very confused and in need of help

i showed this picutre along with having swabs done at a clinic, the nurse said it very much looked like herpes. swab was negative this was most likely because it was on its way out as the nurse put it. i had some bloods done to check for anti bodies these came back negative . baring in mind my last sexual incounter was in march what do u think?

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what exactly did they swab?

the red lumps in the lips