Herpes rarely goes from the genitals to the mouth. Did your partner have any genital sores?
Have you seen a doctor? You really should. I'd be surprised if it's herpes if it looks like a mosquito bite, but clearly, you have some kind of illness and should be seen by your doctor. If he thinks it's herpes, see if he can do a PCR swab on the sore. Stop putting vaseline on it so they can swab it and get accurate results. Don't let them visually diagnose you with herpes - that's often an incorrect diagnosis.
Let us know what happens.