To start, I am a late 20s, caucasian, heterosexual male. I have read conflicting information regarding the risk of giving cunnlingus and the risks involved. My situation is that I gave cunnilingus to a female of unknown status after having protected vaginal sex for several minutes. We then had more protected intercourse. What is now worrying me is that I brushed my teeth, and spit out blood from my gums (they used to bleed when I brushed), 15 minutes before the intercourse/cunninlingus started. This happened 2 years ago, but I haven't been worried, until now, due to believing that there isn't a big risk of contracting STDs (esp. HIV) from giving oral to a woman. I thought oral was essentially safe sex. But, with some new health anxiety and OCD, I'm not sure how safe I was being, and I have been concerned about HIV. I was concerned I could have given it to my ex-gf, but she just tested negative a few weeks ago, 4 months after our last sexual encounter. I have seen this question asked, and know what the answer will probably be, but I'm seeking help anyways for peace of mind, if not anything else. I found a swollen lymph node on the back left side of my neck 2 months ago, one behind my left ear which I think has been there for many years, and one on the inside of my elbow, which I noticed after overdoing it and hurting my elbow at the gym 2 weeks ago. The node in my neck that is slightly enlarged fluctuates in size, always 1cm or less, and used to frequently enlarge as a child when I was ill (I was a sickly kid with dozens of sinus infections, ear infections, etc). The node in the elbow is what worries me, as every website screams HIV if these nodes are enlarged. Is there an HIV risk involved considering I brushed my teeth and had bleeding gums close to the time I performed cunnilingus? Is there any need to be tested over this incident? Thank you.