I Need A Clear Mind.I've Been Told By Many People

I need a clear mind.I've been told by many people that it is possible but unlikely to come in contact with if I found a small drop of blood on my finger that was not mine and did not know where it came from pretty it was already there before I saw and I accidentally stick the same exact finger into my vagina without realizing it would I come in contact with hiv...and also a few weeks later the same thing happened then but instead of sticking the finger with the blood on it in my vagina I stuck it in my mouth would I come in contact with hiv through tha?? ? I need a clear mind and a pointblank answer so I can move on..no possibilty jus a pointblank answer