Welcome to the HIV forum. I'll try to help. Bottom line: You were not at significant risk of HIV from this exposure. Don't worry about it.
The notion of female "ejaculation" is somewhat controversial, but my understanding is that most sex experts believe there is no such thing. Most "ejaculations" probably are urine, which is not infectious for HIV. Even for vaginal or other genital fluids, oral exposure carries little or no risk; there has never been a reported and confirmed case of HIV transmission by cunnilingus (oral-vaginal contact), either to the genital partner or the oral partner. And if you are in the US or other industrialized country, the odds are extremely low (probably under 1 in 1,000) that your partner had HIV.
Your symptoms sound like a garden variety cold. Acute HIV infection does not cause nasal congestion or other "sinus" symptoms, and it almost always causes fever of 101 or higher. (Feeling "feverish" doesn't count if the temperature isn't elevated.) You had a virus, which is why Augmentin didn't work -- no antibiotics work against viruses. I also doubt the moxifloxacin (Avelox) didn't helpe either; most likely your symptoms were about to clear up on their own.
To your specific questions:
1) No risk for HIV, as discussed above; and very low for other STDs as well. Oral gonorrhea is the major risk, but if you had that, your antibiotics cleared it up so no worries now.
2) See above re urine and female "ejaculate".
3) From a risk assessment standpoint, you don't need HIV testing. But you are free to do it if my advice doesn't settle your fears, i.e. if you would benefit from the additional reassurance of a negative test result. If you get tested, you need wait no longer, because 3 months is old news with the modern HIV antibody tests -- any time after 6-8 weeks is fine.
4,5) I see no need for testing for any other STDs. The antibiotics would also have nipped in the bud any other bacterial STDs, e.g. syphilis.
6) I doubt Listerine or any other mouthwash makes a difference in risk one way or the other.
In summary, truly no worries here. I hope you find this information reassuring. Happy new year-- HHH, MD
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