Could these be Balanitis or Herpes? Men's Genitalia, angry red spots

These red angry looking small bumps have turned up on the head of my penis and i am keen to know if you think these are Herpes or Balanitis or anything else. They aren't painful, slightly sensitive if i touch them. Please take a look at the photos, you will see a cluster of small angry red spots and two larger ones on the edge of the gland. I haven't had these before, though i may have had the odd very small red spot but nothing noteworthy. What is noteworthy however is that I had two sexual encounters in the last two weeks and these red spots have coincided with these meetings, having appeared in just the last week.

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From your experience, has this the tell tale signs of Herpes or Balanitis? Do you advice keeping the area dry and clean, waiting a while to see if it will clear up or go to the Doctors sooner rather than later? Lastly, thank you for any help, suggestions or advice you can offer.