I Live In A Warm Climate Year Round. Traveled To

I live in a warm climate year round. Traveled to cold climate for a two week vacation. After a day or two on vacation with lots of walking in cities, I noticed a rash and a couple of small scabs on my penis. Thought it was just a rash of some sort from travel rubbing and maybe from masterbation on top of that. No pain, a little itching, but pretty much did not eve know it was there. Lasted during my entire trip. Did not think anything about it. Got back home and after 24 hours, it began to go away. Now, fourth day back in warm home country and pretty much all gone. I was a little worried so I Googled it the past couple of days...and all you read is about Genital warts. I am very, very worried. I have been sleeping with a girl (less then 10 times) over the past 7 months. Unprotected, but she says she has nothing. Genital warts seems to have pain, lesions, before and then scab (from what I have read). But internet is freaking me out. As of today, only have little rash (very small) at the place the shaft meets the scrotum and two small spots where the scabs were. Little itching on scrotum, but maybe that is in my head. Seems strange that Herpes (or genital warts) would have the perfect timing of me traveling and then returning. But if you go online..it scares you into thinking anything on your penis is genital warts. The scab marks and rash are too small already for a picture, just looking to see if I am paranoid and it COULD be something else. Thanks.