Tiny red bumps on penis shaft

[PTMarine]

Two days ago after foreplay with my g/f i noticed tiny red 'bumps' on my penis shaft, in between the head and the base. The bumps are not raised off the skin at all, they look more like dots. There are about 6 of them, very very small. It came after we were dry humping with our clothes on, (we couldn't have sex because she was on her period) so I figure it's just an abrasion or irritation. I'm only concerned because a while ago (well before I entered in this relationship) I was told  that I've been exposed to genital herpes, and I'm concerned that this a breakout, although I've never had one. Her and I have been in a relationship with only each other for over two months, and she's completely clean. Any ideas as to what it could be? thanks

[PTMarine]

another question I have is that when I got tested for HSV 2 the doc told me "I had been exposed to it." I got tested by bloodwork. My question is does being exposed to it mean I necessarily have contracted it? I've never had an OB or anything

[Dr_Aparna]

Hi,
The typical symptom a primary HSV-1 or HSV-2 genital infection is clusters of inflamed papules and vesicles on the outer surface of the genitals resembling cold sores.These usually appear 4–7 days after sexual exposure to HSV for the first time.
In males, the lesions occur on the shaft of the penis or other parts of the genital region, on the inner thigh, buttocks, or anus.
Other common symptoms include pain, itching, and burning. Less frequent, yet still common, symptoms include discharge from the penis or vagina, fever, headache, muscle pain (myalgia), swollen and enlarged lymph nodes and malaise.
ref:http://en.wikipedia.org/wiki/Herpes
The rash you have described could be because of chafing action caused by the clothing.You can just apply an antiseptic/antibacterial ointment on the lesions and see if it helps in causing them to subside.