Possible very slow healing penis abrasion?

Hello.  Approximately five months ago I began a new relationship.  Two weeks into the relationship she had her period.  For that week we did not have intercourse, but petted heavily.  During the week I noticed a slightly discolored spot at the bottom of the head of the penis (on the top side).  It was slightly visible and what I believed to be a minor abrasion from the rubbing against my underwear and clothing.  

At the end of the week we had sex 4 times in 48 hours.  I was about to shower and noticed the spot was bright red.  It appeared slightly moist and slick and was very red.  Again, I thought it was an abrasion.  I looked into STD's on the web.  There were no blisters, pus, or sores.  It was never raised.  It was slightly tender.  So, I thought it would heal on its own.  The problem is that it is still not completely healed.  If intercourse occurs, it will become more red.  It also seems to redden and become sensitive when exposed to chlorine in pools.  The spot is about the size of 1/2 of a dime.

Currently, I would describe it as half healed.  It is less red.  However, I cannot think of any type of abrasion that wouldn't have healed by now.  I am a little confused, but it is definitely not like the other abrasions I have had.  However, I have never had one on the head of the penis.  It definitely seems to be "better" if very clean and dry.  It will become "rough" I guess and appear to be healing.  

Any advice would be greatly appreciated.  Really not sure what to do at this point?  Could it be an infection or bacteria?  I'm lost.

Thank you.

[kgersch86]

It is very common to have lesions on your penis. I would go see my doctor as soon as possible. If it is an STD the sooner you find out the better and since this has been going on for 5 months now I would get in as soon as possible. Some STDs have long lasting effects if the symptoms are ignored and can lead to sterilization of both males and females. If this is an STD that you got from her, she may not even know when she contracted it because women are asymptomatic for up to a year after infection. I was diagnosed with chlamydia and had had it for almost a year because I showed any signs. Syphilis causes unhealable lesions on the penis so it's easier to catch but in women the lesions are inside the vaginal wall so they are unnoticable. If syphilis does make it far enough into the secondary stage in women it can very easily cause sterilization. I would talk to your girlfriend about it ASAP to prevent it from progressing if it is in fact a STD. The earlier to better..