Hi I had an incident about 3 weeks ago and I had a flu a week ago. I was having fingering and varginal intercourse. I had condom on. However, I found out after the intercourse that the girl just had period which my hands and condom was spotted with minimal amount of blood. Afterward, I instantly washed off all blood stains. I checked that i don't have any cuts on my hands and the condom was on correctly. I also checked that there are no blood stains on my penis. Would it be possible that this may cause HIV infection?