Dr. I had a sex last night with my gf without using condom. But day before yesterday when I was removing my hairs of my penis I slightly get cuts are form on the penis with the shaving blade and length is about 3-4 cms. Blood was didn't came out at that time. But the while having sex with my gf it swell. Nd it became reddish. So I want know is any thing happens to me? Like HIV AIDS or other diseases by entering my gf's Siemens into my penis. Is there any chances to enter the girls Siemens into my penis? Nd please Dr. tell me about HIV AIDS how it will affect to us.