HIV in pre-*** and viral loads

So like everyone else...I'm no different i consider myself knowledgeable of HIV facts and stats (however clearly i dont know everything or else i wont be asking these questions nor would i have but myself in this situation)...So im a gay male (bottom) and I've been dating this guy for the past two weeks and i think due to the frequency i see him ie every day for like 5 hrs! i feel like I'm getting caught up with falling for him and being in love anyway. I started to feel comfortable with the idea of sexual acts with him! So me being "weak" and just wanted to make him happy we began making out and i eventually reached "down there" with mild hesitation i started performing oral sex on him. I guarantee i was performing oral sex for no more than 1 minute and started crying because i was not in fact ready, and i do not recall tasting any pre-cum nor were there any sores present in my mouth! but lets assume my possible worst case scenario was precum did enter my mouth as i think everyone precums (another question ...does everyone precum?) what are my chances of being infected if he is HIV+  

[Teak]

HIV is not transmitted by oral sex.